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93 lines
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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>Rolls back a transaction that was begun with
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sqlsrv_begin_transaction</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-rollback" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">sqlsrv_rollback</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_rollback</span> — <span class="dc-title">Rolls back a transaction that was begun with
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<span class="function"><a href="sqlsrv_begin_transaction.html" class="function">sqlsrv_begin_transaction()</a></span></span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.sqlsrv-rollback-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_rollback</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$conn</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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Rolls back a transaction that was begun with <span class="function"><a href="sqlsrv_begin_transaction.html" class="function">sqlsrv_begin_transaction()</a></span>
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and returns the connection to auto-commit mode.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.sqlsrv-rollback-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">conn</code></dt>
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<dd>
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<p class="para">
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The connection resource returned by a call to <span class="function"><a href="sqlsrv_connect.html" class="function">sqlsrv_connect()</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.sqlsrv-rollback-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 examples" id="refsect1-function.sqlsrv-rollback-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-2589">
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<p><strong>Example #1 <span class="function"><strong>sqlsrv_rollback()</strong></span> example</strong></p>
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<div class="example-contents"><p>
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The following example demonstrates how to use <span class="function"><a href="sqlsrv_begin_transaction.html" class="function">sqlsrv_begin_transaction()</a></span>
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together with <span class="function"><a href="sqlsrv_commit.html" class="function">sqlsrv_commit()</a></span> and <span class="function"><strong>sqlsrv_rollback()</strong></span>.
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</p></div>
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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">$connectionInfo </span><span style="color: #007700">= array( </span><span style="color: #DD0000">"Database"</span><span style="color: #007700">=></span><span style="color: #DD0000">"dbName"</span><span style="color: #007700">, </span><span style="color: #DD0000">"UID"</span><span style="color: #007700">=></span><span style="color: #DD0000">"userName"</span><span style="color: #007700">, </span><span style="color: #DD0000">"PWD"</span><span style="color: #007700">=></span><span style="color: #DD0000">"password"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$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">$conn </span><span style="color: #007700">=== </span><span style="color: #0000BB">false </span><span style="color: #007700">) {<br /> die( </span><span style="color: #0000BB">print_r</span><span style="color: #007700">( </span><span style="color: #0000BB">sqlsrv_errors</span><span style="color: #007700">(), </span><span style="color: #0000BB">true </span><span style="color: #007700">));<br />}<br /><br /></span><span style="color: #FF8000">/* Begin the transaction. */<br /></span><span style="color: #007700">if ( </span><span style="color: #0000BB">sqlsrv_begin_transaction</span><span style="color: #007700">( </span><span style="color: #0000BB">$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: #FF8000">/* Initialize parameter values. */<br /></span><span style="color: #0000BB">$orderId </span><span style="color: #007700">= </span><span style="color: #0000BB">1</span><span style="color: #007700">; </span><span style="color: #0000BB">$qty </span><span style="color: #007700">= </span><span style="color: #0000BB">10</span><span style="color: #007700">; </span><span style="color: #0000BB">$productId </span><span style="color: #007700">= </span><span style="color: #0000BB">100</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/* Set up and execute the first query. */<br /></span><span style="color: #0000BB">$sql1 </span><span style="color: #007700">= </span><span style="color: #DD0000">"INSERT INTO OrdersTable (ID, Quantity, ProductID)<br /> VALUES (?, ?, ?)"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$params1 </span><span style="color: #007700">= array( </span><span style="color: #0000BB">$orderId</span><span style="color: #007700">, </span><span style="color: #0000BB">$qty</span><span style="color: #007700">, </span><span style="color: #0000BB">$productId </span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$stmt1 </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_query</span><span style="color: #007700">( </span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">$sql1</span><span style="color: #007700">, </span><span style="color: #0000BB">$params1 </span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Set up and execute the second query. */<br /></span><span style="color: #0000BB">$sql2 </span><span style="color: #007700">= </span><span style="color: #DD0000">"UPDATE InventoryTable <br /> SET Quantity = (Quantity - ?) <br /> WHERE ProductID = ?"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$params2 </span><span style="color: #007700">= array(</span><span style="color: #0000BB">$qty</span><span style="color: #007700">, </span><span style="color: #0000BB">$productId</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$stmt2 </span><span style="color: #007700">= </span><span style="color: #0000BB">sqlsrv_query</span><span style="color: #007700">( </span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">$sql2</span><span style="color: #007700">, </span><span style="color: #0000BB">$params2 </span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* If both queries were successful, commit the transaction. */<br />/* Otherwise, rollback the transaction. */<br /></span><span style="color: #007700">if( </span><span style="color: #0000BB">$stmt1 </span><span style="color: #007700">&& </span><span style="color: #0000BB">$stmt2 </span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">sqlsrv_commit</span><span style="color: #007700">( </span><span style="color: #0000BB">$conn </span><span style="color: #007700">);<br /> echo </span><span style="color: #DD0000">"Transaction committed.<br />"</span><span style="color: #007700">;<br />} else {<br /> </span><span style="color: #0000BB">sqlsrv_rollback</span><span style="color: #007700">( </span><span style="color: #0000BB">$conn </span><span style="color: #007700">);<br /> echo </span><span style="color: #DD0000">"Transaction rolled back.<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-rollback-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_begin_transaction.html" class="function" rel="rdfs-seeAlso">sqlsrv_begin_transaction()</a> - Begins a database transaction</span></li>
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<li class="member"><span class="function"><a href="sqlsrv_commit.html" class="function" rel="rdfs-seeAlso">sqlsrv_commit()</a> - Commits a transaction that was begun with sqlsrv_begin_transaction</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> |