language/types/object.xml
e587d0655e426f97b3fcb431453da5030e743b23
e587d0655e426f97b3fcb431453da5030e743b23
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to instantiate a class:
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</para>
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<informalexample>
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<example>
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<title>Object Construction</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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@@ -28,7 +29,7 @@ $bar->do_foo();
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?>
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]]>
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</programlisting>
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</informalexample>
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</example>
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<simpara>
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For a full discussion, see the
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<para>
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If an <type>object</type> is converted to an <type>object</type>, it is not
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modified. If a value of any other type is converted to an
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<type>object</type>, a new instance of the <literal>stdClass</literal>
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<type>object</type>, a new instance of the <classname>stdClass</classname>
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built-in class is created. If the value was &null;, the new instance will be
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empty. An <type>array</type> converts to an <type>object</type> with properties
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named by keys and corresponding values, with the exception of numeric keys which
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will be inaccessible unless iterated.
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named by keys and corresponding values. Note that in this case before PHP 7.2.0 numeric keys
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have been inaccessible unless iterated.
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</para>
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<informalexample>
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<example>
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<title>Casting to an Object</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$obj = (object) array('1' => 'foo');
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var_dump(isset($obj->{'1'})); // outputs 'bool(false)'
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var_dump(key($obj)); // outputs 'int(1)'
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var_dump(isset($obj->{'1'})); // outputs 'bool(true)'
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// Deprecated as of PHP 8.1
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var_dump(key($obj)); // outputs 'string(1) "1"'
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?>
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]]>
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</programlisting>
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</informalexample>
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</example>
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<para>
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For any other value, a member variable named <literal>scalar</literal> will contain
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the value.
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</para>
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<informalexample>
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<example>
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<title><literal>(object)</literal> cast</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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@@ -76,7 +81,7 @@ echo $obj->scalar; // outputs 'ciao'
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?>
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]]>
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</programlisting>
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</informalexample>
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</example>
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</sect2>
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</sect1>
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