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49 lines
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49 lines
6.5 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>返回结果列的数目</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.oci-num-fields" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">oci_num_fields</h1>
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<p class="verinfo">(PHP 5, PHP 7, PECL OCI8 >= 1.1.0)</p><p class="refpurpose"><span class="refname">oci_num_fields</span> — <span class="dc-title">返回结果列的数目</span></p>
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</div>
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<div class="refsect1 unknown-unknown-unknown-seealsr" id="refsect1-function.oci-num-fields-unknown-unknown-unknown-seealsr">
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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>oci_num_fields</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$statement</code></span>
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) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>oci_num_fields()</strong></span> 返回
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<code class="parameter">statement</code> 中的列的数目。
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</p>
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<p class="para">
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<div class="example" id="example-2449">
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<p><strong>Example #1 <span class="function"><strong>oci_num_fields()</strong></span> 例子</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /> </span><span style="color: #007700">echo </span><span style="color: #DD0000">"<pre>\n"</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"scott"</span><span style="color: #007700">, </span><span style="color: #DD0000">"tiger"</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_parse</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #DD0000">"select * from emp"</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">oci_execute</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br /><br /> while (</span><span style="color: #0000BB">oci_fetch</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$ncols </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_num_fields</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br /> for (</span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">1</span><span style="color: #007700">; </span><span style="color: #0000BB">$i </span><span style="color: #007700"><= </span><span style="color: #0000BB">$ncols</span><span style="color: #007700">; </span><span style="color: #0000BB">$i</span><span style="color: #007700">++) {<br /> </span><span style="color: #0000BB">$column_name </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_field_name</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">, </span><span style="color: #0000BB">$i</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$column_value </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_result</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">, </span><span style="color: #0000BB">$i</span><span style="color: #007700">);<br /> echo </span><span style="color: #0000BB">$column_name </span><span style="color: #007700">. </span><span style="color: #DD0000">': ' </span><span style="color: #007700">. </span><span style="color: #0000BB">$column_value </span><span style="color: #007700">. </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /> }<br /> echo </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /> }<br /><br /> </span><span style="color: #0000BB">oci_free_statement</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">oci_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">);<br /><br /> echo </span><span style="color: #DD0000">"</pre>"</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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<p class="para">
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<span class="function"><strong>oci_num_fields()</strong></span> 在出错时返回 <strong><code>FALSE</code></strong>。
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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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在 PHP 5.0.0 之前的版本必须使用 <span class="function"><a href="ocinumcols.html" class="function">ocinumcols()</a></span>
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替代本函数。该函数名仍然可用，为向下兼容作为
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<span class="function"><strong>oci_num_fields()</strong></span> 的别名。不过其已被废弃，不推荐使用。
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</p>
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</p></blockquote>
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</div>
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</div></div></div></body></html> |