...

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@@ -11,7 +11,7 @@

11

11

<methodsynopsis>

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<type>void</type><methodname>unset</methodname>

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<methodparam><type>mixed</type><parameter>var</parameter></methodparam>

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-

<methodparam choice="opt"><type>mixed</type><parameter>...</parameter></methodparam>

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+

<methodparam rep="repeat"><type>mixed</type><parameter>vars</parameter></methodparam>

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</methodsynopsis>

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<para>

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<function>unset</function> destroys the specified variables.

...

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@@ -165,10 +165,10 @@ Before unset: 3, after unset: 23

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</listitem>

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</varlistentry>

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<varlistentry>

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-

<term><parameter>...</parameter></term>

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+

<term><parameter>vars</parameter></term>

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<listitem>

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<para>

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-

Another variable ...

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+

Further variables.

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</para>

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</listitem>

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</varlistentry>

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@@ -206,10 +206,12 @@ unset($foo1, $foo2, $foo3);

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<example>

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<title>Using <literal>(unset)</literal> casting</title>

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<para>

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-

<literal>(unset)</literal> casting is often confused with the

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+

<link linkend="language.types.null.casting"><literal>(unset)</literal></link>

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+

casting is often confused with the

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<function>unset</function> function. <literal>(unset)</literal>

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casting serves only as a <literal>NULL</literal>-type cast, for

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completeness. It does not alter the variable it's casting.

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The (unset) cast is deprecated as of PHP 7.2.0, removed as of 8.0.0.

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</para>

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<programlisting role="php">

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<![CDATA[

...

...

@@ -237,13 +239,20 @@ string(6) "Felipe"

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&note.language-construct;

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<note>

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<para>

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-

It is possible to unset even object properties visible in current context.

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+

It is possible to unset object properties visible in the current context.

243

+

</para>

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+

<para>

245

+

If declared,

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+

<link linkend="object.get">__get()</link>

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+

is called when accessing an unset property, and

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+

<link linkend="object.set">__set()</link>

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+

is called when setting an unset property.

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</para>

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</note>

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<note>

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<para>

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It is not possible to unset <literal>$this</literal> inside an object

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-

method since PHP 5.

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+

method.

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</para>

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</note>

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<note>

...

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@@ -263,6 +272,7 @@ string(6) "Felipe"

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<member><function>empty</function></member>

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<member><link linkend="object.unset">__unset()</link></member>

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<member><function>array_splice</function></member>

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+

<member><link linkend="language.types.null.casting">(unset) casting</link></member>

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</simplelist>

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</para>

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</refsect1>

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