php-doc-en/reference/uopz/functions/uopz-undefine.xml
2018-07-05 11:14:42 +00:00

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XML

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.uopz-undefine" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>uopz_undefine</refname>
<refpurpose>Undefine a constant</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>uopz_undefine</methodname>
<methodparam><type>string</type><parameter>constant</parameter></methodparam>
</methodsynopsis>
<methodsynopsis>
<type>bool</type><methodname>uopz_undefine</methodname>
<methodparam><type>string</type><parameter>class</parameter></methodparam>
<methodparam><type>string</type><parameter>constant</parameter></methodparam>
</methodsynopsis>
<para>
Removes the constant at runtime
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>class</parameter></term>
<listitem>
<para>
The name of the class containing <parameter>constant</parameter>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>constant</parameter></term>
<listitem>
<para>
The name of an existing constant
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title><function>uopz_undefine</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
define("MY", true);
uopz_undefine("MY");
var_dump(defined("MY"));
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
bool(false)
]]>
</screen>
</example>
</refsect1>
</refentry>
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