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docs/php/oci_field_is_null.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>检查字段是否为 NULL</title>
</head>
<body class="docs"><div id="layout">
<div id="layout-content"><div id="function.oci-field-is-null" class="refentry">
<div class="refnamediv">
<h1 class="refname">oci_field_is_null</h1>
<p class="verinfo">(PHP 5, PHP 7, PECL OCI8 &gt;= 1.1.0)</p><p class="refpurpose"><span class="refname">oci_field_is_null</span> &mdash; <span class="dc-title">检查字段是否为 <strong><code>NULL</code></strong></span></p>
</div>
<div class="refsect1 unknown-seealsp" id="refsect1-function.oci-field-is-null-unknown-seealsp">
<h3 class="title">说明</h3>
<div class="methodsynopsis dc-description">
<span class="methodname"><strong>oci_field_is_null</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$statement</code></span>
, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$field</code></span>
) : <span class="type">bool</span></div>
<p class="para rdfs-comment">
如果 <code class="parameter">statement</code> 语句结果中返回的
<code class="parameter">field</code> 字段的值是
<strong><code>NULL</code></strong>，<span class="function"><strong>oci_field_is_null()</strong></span> 返回
<strong><code>TRUE</code></strong>。<code class="parameter">field</code> 参数可以是字段的索引或字段名（大写字母）。
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
在 PHP 5.0.0 之前的版本必须使用 <span class="function"><a href="ocicolumnisnull.html" class="function">ocicolumnisnull()</a></span>
替代本函数。该函数名仍然可用，为向下兼容作为
<span class="function"><strong>oci_field_is_null()</strong></span> 的别名。不过其已被废弃，不推荐使用。
</p>
</p></blockquote>
</div>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>检查字段是否为 NULL</title>
</head>
<body class="docs"><div id="layout">
<div id="layout-content"><div id="function.oci-field-is-null" class="refentry">
<div class="refnamediv">
<h1 class="refname">oci_field_is_null</h1>
<p class="verinfo">(PHP 5, PHP 7, PECL OCI8 &gt;= 1.1.0)</p><p class="refpurpose"><span class="refname">oci_field_is_null</span> &mdash; <span class="dc-title">检查字段是否为 <strong><code>NULL</code></strong></span></p>
</div>
<div class="refsect1 unknown-seealsp" id="refsect1-function.oci-field-is-null-unknown-seealsp">
<h3 class="title">说明</h3>
<div class="methodsynopsis dc-description">
<span class="methodname"><strong>oci_field_is_null</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$statement</code></span>
, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$field</code></span>
) : <span class="type">bool</span></div>
<p class="para rdfs-comment">
如果 <code class="parameter">statement</code> 语句结果中返回的
<code class="parameter">field</code> 字段的值是
<strong><code>NULL</code></strong>，<span class="function"><strong>oci_field_is_null()</strong></span> 返回
<strong><code>TRUE</code></strong>。<code class="parameter">field</code> 参数可以是字段的索引或字段名（大写字母）。
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
在 PHP 5.0.0 之前的版本必须使用 <span class="function"><a href="ocicolumnisnull.html" class="function">ocicolumnisnull()</a></span>
替代本函数。该函数名仍然可用，为向下兼容作为
<span class="function"><strong>oci_field_is_null()</strong></span> 的别名。不过其已被废弃，不推荐使用。
</p>
</p></blockquote>
</div>
</div></div></div></body></html>