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125 lines
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HTML
125 lines
6.4 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>Submits a command and separate parameters to the server without waiting for the result(s)</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.pg-send-query-params" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">pg_send_query_params</h1>
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<p class="verinfo">(PHP 5 >= 5.1.0, PHP 7)</p><p class="refpurpose"><span class="refname">pg_send_query_params</span> — <span class="dc-title">Submits a command and separate parameters to the server without waiting for the result(s)</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.pg-send-query-params-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>pg_send_query_params</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$connection</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$query</code></span>
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, <span class="methodparam"><span class="type">array</span> <code class="parameter">$params</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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Submits a command and separate parameters to the server without
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waiting for the result(s).
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</p>
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<p class="para">
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This is equivalent to <span class="function"><a href="pg_send_query.html" class="function">pg_send_query()</a></span> except that query
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parameters can be specified separately from the
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<code class="parameter">query</code> string. The function's parameters are
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handled identically to <span class="function"><a href="pg_query_params.html" class="function">pg_query_params()</a></span>. Like
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<span class="function"><a href="pg_query_params.html" class="function">pg_query_params()</a></span>, it will not work on pre-7.4 PostgreSQL
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connections, and it allows only one command in the query string.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.pg-send-query-params-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">connection</code></dt>
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<dd>
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<p class="para">
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PostgreSQL database connection resource.
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</p>
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</dd>
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<dt>
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<code class="parameter">query</code></dt>
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<dd>
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<p class="para">
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The parameterized SQL statement. Must contain only a single statement.
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(multiple statements separated by semi-colons are not allowed.) If any parameters
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are used, they are referred to as $1, $2, etc.
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</p>
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</dd>
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<dt>
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<code class="parameter">params</code></dt>
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<dd>
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<p class="para">
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An array of parameter values to substitute for the $1, $2, etc. placeholders
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in the original prepared query string. The number of elements in the array
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must match the number of placeholders.
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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.pg-send-query-params-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。</p>
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<p class="para">
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Use <span class="function"><a href="pg_get_result.html" class="function">pg_get_result()</a></span> to determine the query result.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.pg-send-query-params-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-2517">
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<p><strong>Example #1 Using <span class="function"><strong>pg_send_query_params()</strong></span></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 /> $dbconn </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"dbname=publisher"</span><span style="color: #007700">) or die(</span><span style="color: #DD0000">"Could not connect"</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">// Using parameters. Note that it is not necessary to quote or escape<br /> // the parameter.<br /> </span><span style="color: #0000BB">pg_send_query_params</span><span style="color: #007700">(</span><span style="color: #0000BB">$dbconn</span><span style="color: #007700">, </span><span style="color: #DD0000">'select count(*) from authors where city = $1'</span><span style="color: #007700">, array(</span><span style="color: #DD0000">'Perth'</span><span style="color: #007700">));<br /> <br /> </span><span style="color: #FF8000">// Compare against basic pg_send_query usage<br /> </span><span style="color: #0000BB">$str </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_escape_string</span><span style="color: #007700">(</span><span style="color: #DD0000">'Perth'</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">pg_send_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$dbconn</span><span style="color: #007700">, </span><span style="color: #DD0000">"select count(*) from authors where city = '</span><span style="color: #007700">${</span><span style="color: #0000BB">str</span><span style="color: #007700">}</span><span style="color: #DD0000">'"</span><span style="color: #007700">);<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.pg-send-query-params-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="pg_send_query.html" class="function" rel="rdfs-seeAlso">pg_send_query()</a> - 发送异步查询</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> |