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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Retrieves an option value for a statement resource or a connection resource</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.db2-get-option" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">db2_get_option</h1>
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<p class="verinfo">(PECL ibm_db2 >= 1.6.0)</p><p class="refpurpose"><span class="refname">db2_get_option</span> — <span class="dc-title">Retrieves an option value for a statement resource or a connection resource</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.db2-get-option-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>db2_get_option</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$resource</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$option</code></span>
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) : <span class="type">string</span></div>
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<p class="para rdfs-comment">
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Retrieves the value of a specified option value for a statement resource
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or a connection resource.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.db2-get-option-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">resource</code></dt>
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<dd>
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<p class="para">
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A valid statement resource as returned from
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<span class="function"><a href="db2_prepare.html" class="function">db2_prepare()</a></span> or a valid connection resource as
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returned from <span class="function"><a href="db2_connect.html" class="function">db2_connect()</a></span> or
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<span class="function"><a href="db2_pconnect.html" class="function">db2_pconnect()</a></span>.
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</p>
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</dd>
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<dt>
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<code class="parameter">option</code></dt>
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<dd>
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<p class="para">
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A valid statement or connection options. The following new options are available
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as of ibm_db2 version 1.6.0. They provide useful tracking information
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that can be set during execution with <span class="function"><strong>db2_get_option()</strong></span>.
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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Prior versions of ibm_db2 do not support these new options.
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</p>
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<p class="para">
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When the value in each option is being set, some servers might not handle
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the entire length provided and might truncate the value.
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</p>
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<p class="para">
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To ensure that the data specified in each option is converted correctly
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when transmitted to a host system, use only the characters A through Z,
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0 through 9, and the underscore (_) or period (.).
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</p>
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</p></blockquote>
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<dl>
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<dt>
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<code class="parameter">userid</code></dt>
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<dd>
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<p class="para">
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<em>SQL_ATTR_INFO_USERID</em> - A pointer to a null-terminated
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character string used to identify the client user ID sent to the host
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database server when using DB2 Connect.
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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DB2 for z/OS and OS/390 servers support up to a length of 16 characters.
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This user-id is not to be confused with the authentication user-id, it is for
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identification purposes only and is not used for any authorization.
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</p>
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</p></blockquote>
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</p>
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</dd>
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<dt>
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<code class="parameter">acctstr</code></dt>
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<dd>
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<p class="para">
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<em>SQL_ATTR_INFO_ACCTSTR</em> - A pointer to a null-terminated
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character string used to identify the client accounting string sent to the
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host database server when using DB2 Connect.
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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DB2 for z/OS and OS/390 servers support up to a length of 200 characters.
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</p>
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</p></blockquote>
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</p>
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</dd>
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<dt>
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<code class="parameter">applname</code></dt>
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<dd>
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<p class="para">
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<em>SQL_ATTR_INFO_APPLNAME</em> - A pointer to a null-terminated
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character string used to identify the client application name sent to the
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host database server when using DB2 Connect.
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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DB2 for z/OS and OS/390 servers support up to a length of 32 characters.
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</p>
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</p></blockquote>
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</p>
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</dd>
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<dt>
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<code class="parameter">wrkstnname</code></dt>
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<dd>
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<p class="para">
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<em>SQL_ATTR_INFO_WRKSTNNAME</em> - A pointer to a null-terminated
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character string used to identify the client workstation name sent to the
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host database server when using DB2 Connect.
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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DB2 for z/OS and OS/390 servers support up to a length of 18 characters.
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</p>
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</p></blockquote>
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</p>
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</dd>
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</dl>
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</p>
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</dd>
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</dl>
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</p>
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<p class="para">
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The following table specifies which options are compatible with
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the available resource types:
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<table class="doctable table">
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<caption><strong>Resource-Parameter Matrix</strong></caption>
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<col style="text-align: center;" />
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<col style="text-align: center;" />
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<col style="text-align: center;" />
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<col style="text-align: center;" />
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<col style="text-align: center;" />
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<thead>
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<tr>
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<th>Key</th>
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<th>Value</th>
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<th colspan="3">Resource Type</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td class="empty"> </td><td class="empty"> </td><td>Connection</td>
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<td>Statement</td>
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<td>Result Set</td>
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</tr>
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<tr>
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<td>userid</td>
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<td><em>SQL_ATTR_INFO_USERID</em></td>
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<td>X</td>
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<td>X</td>
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<td>-</td>
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</tr>
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<tr>
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<td>acctstr</td>
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<td><em>SQL_ATTR_INFO_ACCTSTR</em></td>
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<td>X</td>
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<td>X</td>
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<td>-</td>
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</tr>
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<tr>
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<td>applname</td>
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<td><em>SQL_ATTR_INFO_APPLNAME</em></td>
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<td>X</td>
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<td>X</td>
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<td>-</td>
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</tr>
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<tr>
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<td>wrkstnname</td>
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<td><em>SQL_ATTR_INFO_WRKSTNNAME</em></td>
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<td>X</td>
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<td>X</td>
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<td>-</td>
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</tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.db2-get-option-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns the current setting of the connection attribute provided on success
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或者在失败时返回 <strong><code>FALSE</code></strong>.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.db2-get-option-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-1262">
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<p><strong>Example #1 Setting and retrieving parameters through a connection resource</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">/* Database Connection Parameters */<br /></span><span style="color: #0000BB">$database </span><span style="color: #007700">= </span><span style="color: #DD0000">'SAMPLE'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$user </span><span style="color: #007700">= </span><span style="color: #DD0000">'db2inst1'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$password </span><span style="color: #007700">= </span><span style="color: #DD0000">'ibmdb2'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/* Obtain Connection Resource */<br /></span><span style="color: #0000BB">$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #DD0000">"Client attributes passed through connection string:\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/* Create the associative options array with valid key-value pairs */<br />/* Assign the attributes through connection string */<br />/* Access the options specified */<br /></span><span style="color: #0000BB">$options1 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'userid' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'db2inst1'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn1 </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">, </span><span style="color: #0000BB">$options1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$val </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_get_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn1</span><span style="color: #007700">, </span><span style="color: #DD0000">'userid'</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$val </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$options2 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'acctstr' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'account'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn2 </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">, </span><span style="color: #0000BB">$options2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$val </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_get_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn2</span><span style="color: #007700">, </span><span style="color: #DD0000">'acctstr'</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$val </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$options3 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'applname' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'myapp'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn3 </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">, </span><span style="color: #0000BB">$options3</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$val </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_get_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn3</span><span style="color: #007700">, </span><span style="color: #DD0000">'applname'</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$val </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$options4 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'wrkstnname' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'workstation'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn4 </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">, </span><span style="color: #0000BB">$options4</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$val </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_get_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn4</span><span style="color: #007700">, </span><span style="color: #DD0000">'wrkstnname'</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$val </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br />echo </span><span style="color: #DD0000">"Client attributes passed post-connection:\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/* Create the associative options array with valid key-value pairs */<br />/* Assign the attributes after a connection is made */<br />/* Access the options specified */<br /></span><span style="color: #0000BB">$options5 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'userid' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'db2inst1'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn5 </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$rc </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_set_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn5</span><span style="color: #007700">, </span><span style="color: #0000BB">$options5</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$val </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_get_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn5</span><span style="color: #007700">, </span><span style="color: #DD0000">'userid'</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$val </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$options6 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'acctstr' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'account'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn6 </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$rc </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_set_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn6</span><span style="color: #007700">, </span><span style="color: #0000BB">$options6</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$val </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_get_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn6</span><span style="color: #007700">, </span><span style="color: #DD0000">'acctstr'</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$val </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$options7 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'applname' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'myapp'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn7 </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$rc </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_set_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn7</span><span style="color: #007700">, </span><span style="color: #0000BB">$options7</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$val </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_get_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn7</span><span style="color: #007700">, </span><span style="color: #DD0000">'applname'</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$val </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$options8 </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'wrkstnname' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'workstation'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn8 </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$rc </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_set_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn8</span><span style="color: #007700">, </span><span style="color: #0000BB">$options8</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$val </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_get_option</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn8</span><span style="color: #007700">, </span><span style="color: #DD0000">'wrkstnname'</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$val </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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Client attributes passed through connection string:
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db2inst1
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account
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myapp
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workstation
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Client attributes passed post-connection:
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db2inst1
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account
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myapp
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workstation</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.db2-get-option-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="db2_connect.html" class="function" rel="rdfs-seeAlso">db2_connect()</a> - Returns a connection to a database</span></li>
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<li class="member"><span class="function"><a href="db2_cursor_type.html" class="function" rel="rdfs-seeAlso">db2_cursor_type()</a> - Returns the cursor type used by a statement resource</span></li>
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<li class="member"><span class="function"><a href="db2_exec.html" class="function" rel="rdfs-seeAlso">db2_exec()</a> - Executes an SQL statement directly</span></li>
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<li class="member"><span class="function"><a href="db2_set_option.html" class="function" rel="rdfs-seeAlso">db2_set_option()</a> - Set options for connection or statement resources</span></li>
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<li class="member"><span class="function"><a href="db2_pconnect.html" class="function" rel="rdfs-seeAlso">db2_pconnect()</a> - Returns a persistent connection to a database</span></li>
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<li class="member"><span class="function"><a href="db2_prepare.html" class="function" rel="rdfs-seeAlso">db2_prepare()</a> - Prepares an SQL statement to be executed</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |