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108 lines
4.5 KiB
HTML
108 lines
4.5 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>Set the LOB retrieve mode for a FrontBase result set</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.fbsql-set-lob-mode" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">fbsql_set_lob_mode</h1>
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<p class="verinfo">(PHP 4 >= 4.2.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">fbsql_set_lob_mode</span> — <span class="dc-title">Set the LOB retrieve mode for a FrontBase result set</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.fbsql-set-lob-mode-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>fbsql_set_lob_mode</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$result</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$lob_mode</code></span>
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) : <span class="type">bool</span></div>
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<p class="para rdfs-comment">
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Sets the mode for retrieving LOB data from the database.
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</p>
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<p class="para">
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When BLOB and CLOB data is retrieved in FrontBase it can be retrieved
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direct or indirect. Direct retrieved LOB data will always be fetched no
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matter the setting of the lob mode. If the LOB data is less than 512 bytes
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it will always be retrieved directly.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.fbsql-set-lob-mode-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">
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result</code></dt>
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<dd>
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<p class="para">由 <span class="function"><a href="fbsql_query.html" class="function">fbsql_query()</a></span>
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或 <span class="function"><a href="fbsql_db_query.html" class="function">fbsql_db_query()</a></span> 返回的结果标识符。</p></dd>
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<dt>
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<code class="parameter">lob_mode</code></dt>
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<dd>
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<p class="para">
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Can be one of:
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<ul class="itemizedlist">
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<li class="listitem">
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<span class="simpara">
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<strong><code>FBSQL_LOB_DIRECT</code></strong> - LOB data is retrieved
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directly. When data is fetched from the database with
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<span class="function"><a href="fbsql_fetch_row.html" class="function">fbsql_fetch_row()</a></span>, and other fetch functions,
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all CLOB and BLOB columns will be returned as ordinary columns.
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This is the default value on a new FrontBase result.
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<strong><code>FBSQL_LOB_HANDLE</code></strong> - LOB data is retrieved as
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handles to the data. When data is fetched from the database with
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<span class="function"><a href="fbsql_fetch_row.html" class="function">fbsql_fetch_row()</a></span>, and other fetch functions,
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LOB data will be returned as a handle to the data if the data is
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stored indirect or the data if it is stored direct. If a handle
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is returned it will be a 27 byte string formatted as
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<em>@'000000000000000000000000'</em>.
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</span>
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</li>
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</ul>
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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.fbsql-set-lob-mode-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时返回 <strong><code>TRUE</code></strong>， 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 seealso" id="refsect1-function.fbsql-set-lob-mode-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="fbsql_create_blob.html" class="function" rel="rdfs-seeAlso">fbsql_create_blob()</a> - Create a BLOB</span></li>
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<li class="member"><span class="function"><a href="fbsql_create_clob.html" class="function" rel="rdfs-seeAlso">fbsql_create_clob()</a> - Create a CLOB</span></li>
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<li class="member"><span class="function"><a href="fbsql_read_blob.html" class="function" rel="rdfs-seeAlso">fbsql_read_blob()</a> - Read a BLOB from the database</span></li>
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<li class="member"><span class="function"><a href="fbsql_read_clob.html" class="function" rel="rdfs-seeAlso">fbsql_read_clob()</a> - Read a CLOB from the database</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> |