mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-18 13:57:03 +08:00
31 lines
2.2 KiB
HTML
31 lines
2.2 KiB
HTML
<!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>检测变量是否是字符串</title>
|
|
</head>
|
|
<body class="docs"><div id="layout">
|
|
<div id="layout-content"><div id="function.is-string" class="refentry">
|
|
<div class="refnamediv">
|
|
<h1 class="refname">is_string</h1>
|
|
<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">is_string</span> — <span class="dc-title">检测变量是否是字符串</span></p>
|
|
|
|
</div>
|
|
<div class="refsect1 unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-seealsw" id="refsect1-function.is-string-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-seealsw">
|
|
<h3 class="title">描述</h3>
|
|
<div class="methodsynopsis dc-description">
|
|
<span class="methodname"><strong>is_string</strong></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">$var</code></span>
|
|
) : <span class="type">bool</span></div>
|
|
|
|
<p class="para rdfs-comment">
|
|
如果 <code class="parameter">var</code> 是 <span class="type"><a href="language.types.string.html" class="type string">string</a></span> 则返回 <strong><code>TRUE</code></strong>，否则返回 <strong><code>FALSE</code></strong>。
|
|
</p>
|
|
<p class="para">
|
|
参见
|
|
<span class="function"><a href="is_bool.html" class="function">is_bool()</a></span>、<span class="function"><a href="is_int.html" class="function">is_int()</a></span>、<span class="function"><a href="is_integer.html" class="function">is_integer()</a></span>、<span class="function"><a href="is_float.html" class="function">is_float()</a></span>、<span class="function"><a href="is_real.html" class="function">is_real()</a></span>、<span class="function"><a href="is_object.html" class="function">is_object()</a></span>
|
|
和 <span class="function"><a href="is_array.html" class="function">is_array()</a></span>。
|
|
</p>
|
|
</div>
|
|
|
|
</div></div></div></body></html> |