mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-18 05:26:57 +08:00
205 lines
7.3 KiB
HTML
205 lines
7.3 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>返回所有常量的关联数组，键是常量名，值是常量值</title>
|
||
</head>
|
||
<body class="docs"><div id="layout">
|
||
<div id="layout-content"><div id="function.get-defined-constants" class="refentry">
|
||
<div class="refnamediv">
|
||
<h1 class="refname">get_defined_constants</h1>
|
||
<p class="verinfo">(PHP 4 >= 4.1.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">get_defined_constants</span> — <span class="dc-title">返回所有常量的关联数组，键是常量名，值是常量值</span></p>
|
||
|
||
</div>
|
||
|
||
<div class="refsect1 description" id="refsect1-function.get-defined-constants-description">
|
||
<h3 class="title">说明</h3>
|
||
<div class="methodsynopsis dc-description">
|
||
<span class="methodname"><strong>get_defined_constants</strong></span>
|
||
([ <span class="methodparam"><span class="type">bool</span> <code class="parameter">$categorize</code><span class="initializer"> = false</span></span>
|
||
] ) : <span class="type">array</span></div>
|
||
|
||
<p class="para rdfs-comment">
|
||
返回当前所有已定义的常量名和值。
|
||
这包含 <span class="function"><a href="define.html" class="function">define()</a></span> 函数所创建的，也包含了所有扩展所创建的。
|
||
</p>
|
||
</div>
|
||
|
||
|
||
<div class="refsect1 parameters" id="refsect1-function.get-defined-constants-parameters">
|
||
<h3 class="title">参数</h3>
|
||
<p class="para">
|
||
<dl>
|
||
|
||
|
||
<dt>
|
||
<code class="parameter">categorize</code></dt>
|
||
|
||
<dd>
|
||
|
||
<p class="para">
|
||
让此函数返回一个多维数组，分类为第一维的键名，常量和它们的值位于第二维。
|
||
<div class="informalexample">
|
||
<div class="example-contents">
|
||
<div class="phpcode"><pre><span style="color: #000000">
|
||
<span style="color: #0000BB"><?php<br />define</span><span style="color: #007700">(</span><span style="color: #DD0000">"MY_CONSTANT"</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">get_defined_constants</span><span style="color: #007700">(</span><span style="color: #0000BB">true</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span>
|
||
</span>
|
||
</pre></div>
|
||
</div>
|
||
|
||
<p class="para">以上例程的输出类似于：</p>
|
||
<div class="example-contents screen">
|
||
<div class="cdata"><pre>
|
||
Array
|
||
(
|
||
[Core] => Array
|
||
(
|
||
[E_ERROR] => 1
|
||
[E_WARNING] => 2
|
||
[E_PARSE] => 4
|
||
[E_NOTICE] => 8
|
||
[E_CORE_ERROR] => 16
|
||
[E_CORE_WARNING] => 32
|
||
[E_COMPILE_ERROR] => 64
|
||
[E_COMPILE_WARNING] => 128
|
||
[E_USER_ERROR] => 256
|
||
[E_USER_WARNING] => 512
|
||
[E_USER_NOTICE] => 1024
|
||
[E_ALL] => 2047
|
||
[TRUE] => 1
|
||
)
|
||
|
||
[pcre] => Array
|
||
(
|
||
[PREG_PATTERN_ORDER] => 1
|
||
[PREG_SET_ORDER] => 2
|
||
[PREG_OFFSET_CAPTURE] => 256
|
||
[PREG_SPLIT_NO_EMPTY] => 1
|
||
[PREG_SPLIT_DELIM_CAPTURE] => 2
|
||
[PREG_SPLIT_OFFSET_CAPTURE] => 4
|
||
[PREG_GREP_INVERT] => 1
|
||
)
|
||
|
||
[user] => Array
|
||
(
|
||
[MY_CONSTANT] => 1
|
||
)
|
||
|
||
)
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
</p>
|
||
</dd>
|
||
|
||
|
||
</dl>
|
||
|
||
</p>
|
||
</div>
|
||
|
||
|
||
<div class="refsect1 returnvalues" id="refsect1-function.get-defined-constants-returnvalues">
|
||
<h3 class="title">返回值</h3>
|
||
<p class="para">
|
||
返回的数组为 常量名 => 常量值，也可以按注册变量的扩展名称来分组。
|
||
</p>
|
||
</div>
|
||
|
||
|
||
<div class="refsect1 changelog" id="refsect1-function.get-defined-constants-changelog">
|
||
<h3 class="title">更新日志</h3>
|
||
<p class="para">
|
||
<table class="doctable informaltable">
|
||
|
||
<thead>
|
||
<tr>
|
||
<th>版本</th>
|
||
<th>说明</th>
|
||
</tr>
|
||
|
||
</thead>
|
||
|
||
<tbody class="tbody">
|
||
<tr>
|
||
<td>5.3.1</td>
|
||
<td>
|
||
仅作用于 Windows：内核常量归类到 <em>Core</em>，之前是 <em>mhash</em>。
|
||
</td>
|
||
</tr>
|
||
|
||
<tr>
|
||
<td>5.3.0</td>
|
||
<td>
|
||
内核常量归类为 <em>Core</em>，之前是 <em>internal</em>。在 Windows 上，内核常量归类到 <em>mhash</em>。
|
||
</td>
|
||
</tr>
|
||
|
||
<tr>
|
||
<td>5.2.11</td>
|
||
<td>
|
||
<code class="parameter">categorize</code> 参数现在可以合适得被处理。
|
||
在此之前，<code class="parameter">categorize</code> 被解释为 <em>!is_null($categorize)</em>，导致任何非 <strong><code>NULL</code></strong> 的值会强制常量分类。
|
||
</td>
|
||
</tr>
|
||
|
||
</tbody>
|
||
|
||
</table>
|
||
|
||
</p>
|
||
</div>
|
||
|
||
|
||
<div class="refsect1 examples" id="refsect1-function.get-defined-constants-examples">
|
||
<h3 class="title">范例</h3>
|
||
<p class="para">
|
||
<div class="example" id="example-496">
|
||
<p><strong>Example #1 <span class="function"><strong>get_defined_constants()</strong></span> 例子</strong></p>
|
||
<div class="example-contents">
|
||
<div class="phpcode"><pre><span style="color: #000000">
|
||
<span style="color: #0000BB"><?php<br />print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">get_defined_constants</span><span style="color: #007700">());<br /></span><span style="color: #0000BB">?></span>
|
||
</span>
|
||
</pre></div>
|
||
</div>
|
||
|
||
<div class="example-contents"><p>以上例程的输出类似于：</p></div>
|
||
<div class="example-contents screen">
|
||
<div class="cdata"><pre>
|
||
Array
|
||
(
|
||
[E_ERROR] => 1
|
||
[E_WARNING] => 2
|
||
[E_PARSE] => 4
|
||
[E_NOTICE] => 8
|
||
[E_CORE_ERROR] => 16
|
||
[E_CORE_WARNING] => 32
|
||
[E_COMPILE_ERROR] => 64
|
||
[E_COMPILE_WARNING] => 128
|
||
[E_USER_ERROR] => 256
|
||
[E_USER_WARNING] => 512
|
||
[E_USER_NOTICE] => 1024
|
||
[E_ALL] => 2047
|
||
[TRUE] => 1
|
||
)
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
</p>
|
||
</div>
|
||
|
||
|
||
<div class="refsect1 seealso" id="refsect1-function.get-defined-constants-seealso">
|
||
<h3 class="title">参见</h3>
|
||
<p class="para">
|
||
<ul class="simplelist">
|
||
<li class="member"><span class="function"><a href="defined.html" class="function" rel="rdfs-seeAlso">defined()</a> - 检查某个名称的常量是否存在</span></li>
|
||
<li class="member"><span class="function"><a href="get_loaded_extensions.html" class="function" rel="rdfs-seeAlso">get_loaded_extensions()</a> - 返回所有编译并加载模块名的 array</span></li>
|
||
<li class="member"><span class="function"><a href="get_defined_functions.html" class="function" rel="rdfs-seeAlso">get_defined_functions()</a> - 返回所有已定义函数的数组</span></li>
|
||
<li class="member"><span class="function"><a href="get_defined_vars.html" class="function" rel="rdfs-seeAlso">get_defined_vars()</a> - 返回由所有已定义变量所组成的数组</span></li>
|
||
</ul>
|
||
</p>
|
||
</div>
|
||
|
||
|
||
</div></div></div></body></html> |