language/oop5/visibility.xml
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<title>Visibility</title>
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<para>
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The visibility of a property, a method or (as of PHP 7.1.0) a constant can be defined by prefixing
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the declaration with the keywords <emphasis>public</emphasis>,
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<emphasis>protected</emphasis> or
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<emphasis>private</emphasis>. Class members declared public can be
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the declaration with the keywords <literal>public</literal>,
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<literal>protected</literal> or
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<literal>private</literal>. Class members declared public can be
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accessed everywhere. Members declared protected can be accessed
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only within the class itself and by inheriting and parent
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classes. Members declared as private may only be accessed by the
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<sect2 xml:id="language.oop5.visibility-members">
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<title>Property Visibility</title>
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<para>
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Class properties must be defined as public, private, or
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protected. If declared using <emphasis>var</emphasis>,
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the property will be defined as public.
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Class properties may be defined as public, private, or
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protected. Properties declared without any explicit visibility
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keyword are defined as public.
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</para>
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<para>
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<example>
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</programlisting>
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</example>
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</para>
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<note>
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<simpara>
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The PHP 4 method of declaring a variable with the
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<emphasis>var</emphasis> keyword is still supported for compatibility
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reasons (as a synonym for the public keyword). In PHP 5 before 5.1.3, its
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usage would generate an <constant>E_STRICT</constant> warning.
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</simpara>
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</note>
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</sect2>
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<sect2 xml:id="language.oop5.visiblity-methods">
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</example>
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</sect2>
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</sect1>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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