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142 lines
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HTML
142 lines
8.2 KiB
HTML
<!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 metadata for the fields of a statement prepared by
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sqlsrv_prepare or sqlsrv_query</title>
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</head>
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<body class="docs"></div>
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<div id="layout">
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<div id="layout-content"><div id="function.sqlsrv-field-metadata" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">sqlsrv_field_metadata</h1>
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<p class="verinfo">(No version information available, might only be in Git)</p><p class="refpurpose"><span class="refname">sqlsrv_field_metadata</span> — <span class="dc-title">Retrieves metadata for the fields of a statement prepared by
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<span class="function"><a href="sqlsrv_prepare.html" class="function">sqlsrv_prepare()</a></span> or <span class="function"><a href="sqlsrv_query.html" class="function">sqlsrv_query()</a></span>
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</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.sqlsrv-field-metadata-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>sqlsrv_field_metadata</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$stmt</code></span>
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) : <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span></div>
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<p class="para rdfs-comment">
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Retrieves metadata for the fields of a statement prepared by
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<span class="function"><a href="sqlsrv_prepare.html" class="function">sqlsrv_prepare()</a></span> or <span class="function"><a href="sqlsrv_query.html" class="function">sqlsrv_query()</a></span>.
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<span class="function"><strong>sqlsrv_field_metadata()</strong></span> can be called on a statement before
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or after statement execution.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.sqlsrv-field-metadata-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">stmt</code></dt>
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<dd>
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<p class="para">
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The statment resource for which metadata is returned.
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.sqlsrv-field-metadata-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns an array of arrays on success. Otherwise, <strong><code>FALSE</code></strong> is returned.
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Each returned array is described by the following table:
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<table class="doctable table">
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<caption><strong>Array returned by sqlsrv_field_metadata</strong></caption>
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<thead>
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<tr>
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<th>Key</th>
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<th>Description</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>Name</td>
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<td>The name of the field.</td>
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</tr>
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<tr>
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<td>Type</td>
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<td>The numeric value for the SQL type.</td>
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</tr>
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<tr>
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<td>Size</td>
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<td>The number of characters for fields of character type, the number of
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bytes for fields of binary type, or <strong><code>NULL</code></strong> for other types.</td>
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</tr>
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<tr>
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<td>Precision</td>
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<td>The precision for types of variable precision, <strong><code>NULL</code></strong> for other types.</td>
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</tr>
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<tr>
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<td>Scale</td>
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<td>The scale for types of variable scale, <strong><code>NULL</code></strong> for other types.</td>
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</tr>
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<tr>
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<td>Nullable</td>
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<td>An enumeration indicating whether the column is nullable, not nullable,
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or if it is not known.</td>
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</tr>
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</tbody>
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</table>
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For more information, see <a href="http://msdn.microsoft.com/en-us/library/cc296197.aspx" class="link external">» sqlsrv_field_metadata</a>
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in the Microsoft SQLSRV documentation.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.sqlsrv-field-metadata-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-2580">
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<p><strong>Example #1 <span class="function"><strong>sqlsrv_field_metadata()</strong></span> example</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 />$serverName </span><span style="color: #007700">= </span><span style="color: #DD0000">"serverName\sqlexpress"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$connectionInfo </span><span style="color: #007700">= array( </span><span style="color: #DD0000">"Database"</span><span style="color: #007700">=></span><span style="color: #DD0000">"AdventureWorks"</span><span style="color: #007700">, </span><span style="color: #DD0000">"UID"</span><span style="color: #007700">=></span><span style="color: #DD0000">"username"</span><span style="color: #007700">, </span><span style="color: #DD0000">"PWD"</span><span style="color: #007700">=></span><span style="color: #DD0000">"password"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_connect</span><span style="color: #007700">( </span><span style="color: #0000BB">$serverName</span><span style="color: #007700">, </span><span style="color: #0000BB">$connectionInfo</span><span style="color: #007700">);<br />if( </span><span style="color: #0000BB">$conn </span><span style="color: #007700">=== </span><span style="color: #0000BB">false </span><span style="color: #007700">) {<br /> die( </span><span style="color: #0000BB">print_r</span><span style="color: #007700">( </span><span style="color: #0000BB">sqlsrv_errors</span><span style="color: #007700">(), </span><span style="color: #0000BB">true</span><span style="color: #007700">));<br />}<br /><br /></span><span style="color: #0000BB">$sql </span><span style="color: #007700">= </span><span style="color: #DD0000">"SELECT * FROM Table_1"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_prepare</span><span style="color: #007700">( </span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">$sql </span><span style="color: #007700">);<br /><br />foreach( </span><span style="color: #0000BB">sqlsrv_field_metadata</span><span style="color: #007700">( </span><span style="color: #0000BB">$stmt </span><span style="color: #007700">) as </span><span style="color: #0000BB">$fieldMetadata </span><span style="color: #007700">) {<br /> foreach( </span><span style="color: #0000BB">$fieldMetadata </span><span style="color: #007700">as </span><span style="color: #0000BB">$name </span><span style="color: #007700">=> </span><span style="color: #0000BB">$value</span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$name</span><span style="color: #DD0000">: </span><span style="color: #0000BB">$value</span><span style="color: #DD0000"><br />"</span><span style="color: #007700">;<br /> }<br /> echo </span><span style="color: #DD0000">"<br />"</span><span style="color: #007700">;<br />}<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>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.sqlsrv-field-metadata-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="sqlsrv_client_info.html" class="function" rel="rdfs-seeAlso">sqlsrv_client_info()</a> - Returns information about the client and specified connection</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> |