language/control-structures/else.xml
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690c3ea7c7d416c55e2c54d90bfd1f7f4d489288
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<!-- $Revision$ -->
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<sect1 xml:id="control-structures.else" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<title><literal>else</literal></title>
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<title>else</title>
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<?phpdoc print-version-for="else"?>
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<para>
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Often you'd want to execute a statement if a certain condition is
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linkend="control-structures.elseif">elseif</link>).
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</para>
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<note>
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<title>Dangling else</title>
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<para>
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In case of nested <literal>if</literal>-<literal>else</literal> statements,
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an <literal>else</literal> is always associated with the nearest <literal>if</literal>.
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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$a = false;
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$b = true;
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if ($a)
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if ($b)
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echo "b";
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else
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echo "c";
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?>
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]]>
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</programlisting>
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</informalexample>
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Despite the indentation (which does not matter for PHP), the <literal>else</literal>
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is associated with the <literal>if ($b)</literal>, so the example does not produce
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any output. While relying on this behavior is valid, it is recommended to avoid
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it by using curly braces to resolve potential ambiguities.
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</para>
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</note>
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</sect1>
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<!-- Keep this comment at the end of the file
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