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89 lines
3.3 KiB
HTML
89 lines
3.3 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>Sets the file where blobs are read from</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.px-set-blob-file" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">px_set_blob_file</h1>
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<p class="verinfo">(PECL paradox >= 1.3.0)</p><p class="refpurpose"><span class="refname">px_set_blob_file</span> — <span class="dc-title">Sets the file where blobs are read from</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.px-set-blob-file-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>px_set_blob_file</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$pxdoc</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</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 name of the file where blobs are going to be read from or written
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into. Without
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calling this function, <span class="function"><a href="px_get_record.html" class="function">px_get_record()</a></span> or
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<span class="function"><a href="px_retrieve_record.html" class="function">px_retrieve_record()</a></span> will only return
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data in blob fields if the data is part of the record and not stored in the
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blob file. Blob data is stored in the record if it is small enough to fit
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in the size of the blob field.</p>
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<p class="para">
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Calling <span class="function"><a href="px_put_record.html" class="function">px_put_record()</a></span>,
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<span class="function"><a href="px_insert_record.html" class="function">px_insert_record()</a></span>, or
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<span class="function"><a href="px_update_record.html" class="function">px_update_record()</a></span> without calling
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<span class="function"><strong>px_set_blob_file()</strong></span> will result in truncated blob fields
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unless the data fits into the database file.
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</p>
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<p class="para">
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Calling this function twice will close the first blob file and open the new
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one.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.px-set-blob-file-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">pxdoc</code></dt>
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<dd>
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<p class="para">
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Resource identifier of the paradox database
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as returned by <span class="function"><a href="px_new.html" class="function">px_new()</a></span>.
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</p>
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</dd>
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<dt>
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<code class="parameter">filename</code></dt>
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<dd>
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<p class="para">
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The name of the file. Its extension should be <em>.MB</em>.
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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.px-set-blob-file-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></div></div></body></html> |