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162 lines
8.7 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>Replaces a record in a database</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.dbase-replace-record" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">dbase_replace_record</h1>
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<p class="verinfo">(PHP 5 < 5.3.0, dbase 5, dbase 7)</p><p class="refpurpose"><span class="refname">dbase_replace_record</span> — <span class="dc-title">Replaces a record in a database</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.dbase-replace-record-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>dbase_replace_record</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$dbase_identifier</code></span>
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, <span class="methodparam"><span class="type">array</span> <code class="parameter">$record</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$record_number</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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Replaces the given record in the database with the given data.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.dbase-replace-record-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">dbase_identifier</code></dt>
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<dd>
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<p class="para">
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The database link identifier, returned by <span class="function"><a href="dbase_open.html" class="function">dbase_open()</a></span>
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or <span class="function"><a href="dbase_create.html" class="function">dbase_create()</a></span>.
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</p>
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</dd>
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<dt>
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<code class="parameter">record</code></dt>
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<dd>
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<p class="para">
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An indexed array of data. The number of items must be equal to the
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number of fields in the database, otherwise
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<span class="function"><strong>dbase_replace_record()</strong></span> will fail.
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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If you're using <span class="function"><a href="dbase_get_record.html" class="function">dbase_get_record()</a></span> return value for this
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parameter, remember to reset the key named <em>deleted</em>.
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</p>
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</p></blockquote>
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</dd>
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<dt>
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<code class="parameter">record_number</code></dt>
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<dd>
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<p class="para">
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An integer which spans from 1 to the number of records in the database
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(as returned by <span class="function"><a href="dbase_numrecords.html" class="function">dbase_numrecords()</a></span>).
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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.dbase-replace-record-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 changelog" id="refsect1-function.dbase-replace-record-changelog">
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<h3 class="title">更新日志</h3>
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>版本</th>
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<th>说明</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>dbase 7.0.0</td>
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<td>
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<code class="parameter">dbase_identifier</code> is now a <span class="type"><a href="language.types.resource.html" class="type resource">resource</a></span>
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instead of an <span class="type"><a href="language.types.integer.html" class="type int">int</a></span>.
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="refsect1 examples" id="refsect1-function.dbase-replace-record-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-1193">
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<p><strong>Example #1 Updating a record in the database</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 /><br /></span><span style="color: #FF8000">// open in read-write mode<br /></span><span style="color: #0000BB">$db </span><span style="color: #007700">= </span><span style="color: #0000BB">dbase_open</span><span style="color: #007700">(</span><span style="color: #DD0000">'/tmp/test.dbf'</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">);<br /><br />if (</span><span style="color: #0000BB">$db</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">// gets the old row<br /> </span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">dbase_get_record_with_names</span><span style="color: #007700">(</span><span style="color: #0000BB">$db</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /> <br /> </span><span style="color: #FF8000">// remove the 'deleted' entry<br /> </span><span style="color: #007700">unset(</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'deleted'</span><span style="color: #007700">]);<br /> <br /> </span><span style="color: #FF8000">// Update the date field with the current timestamp<br /> </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'date'</span><span style="color: #007700">] = </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'Ymd'</span><span style="color: #007700">);<br /> <br /> </span><span style="color: #FF8000">// convert the row to an indexed array<br /> </span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">array_values</span><span style="color: #007700">(</span><span style="color: #0000BB">$row</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">// Replace the record<br /> </span><span style="color: #0000BB">dbase_replace_record</span><span style="color: #007700">(</span><span style="color: #0000BB">$db</span><span style="color: #007700">, </span><span style="color: #0000BB">$row</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">dbase_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$db</span><span style="color: #007700">);<br />}<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 notes" id="refsect1-function.dbase-replace-record-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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Boolean fields result in an <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span> element value
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(<em>0</em> or <em>1</em>) when retrieved via
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<span class="function"><a href="dbase_get_record.html" class="function">dbase_get_record()</a></span> or
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<span class="function"><a href="dbase_get_record_with_names.html" class="function">dbase_get_record_with_names()</a></span>. If they are written back,
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this results in the value becoming <em>0</em>, so care has to be
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taken to properly adjust the values.
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.dbase-replace-record-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="dbase_add_record.html" class="function" rel="rdfs-seeAlso">dbase_add_record()</a> - Adds a record to a database</span></li>
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<li class="member"><span class="function"><a href="dbase_delete_record.html" class="function" rel="rdfs-seeAlso">dbase_delete_record()</a> - Deletes a record from a 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> |