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Add boolval() documentation.
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@328469 c90b9560-bf6c-de11-be94-00142212c4b1
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Adam Harvey
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5 changed files with 119 additions and 1 deletions
114
reference/var/functions/boolval.xml
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114
reference/var/functions/boolval.xml
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<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="function.boolval" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>boolval</refname>
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<refpurpose>Get the boolean value of a variable</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>boolean</type><methodname>boolval</methodname>
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<methodparam><type>mixed</type><parameter>var</parameter></methodparam>
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</methodsynopsis>
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<para>
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Returns the <type>boolean</type> value of <parameter>var</parameter>.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<variablelist>
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<varlistentry>
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<term><parameter>var</parameter></term>
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<listitem>
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<para>
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The scalar value being converted to a <type>boolean</type>.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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The <type>boolean</type> value of <parameter>var</parameter>.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title><function>boolval</function> examples</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo '0: '.(boolval(0) ? 'true' : 'false')."\n";
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echo '42: '.(boolval(42) ? 'true' : 'false')."\n";
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echo '0.0: '.(boolval(0.0) ? 'true' : 'false')."\n";
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echo '4.2: '.(boolval(4.2) ? 'true' : 'false')."\n";
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echo '"": '.(boolval("") ? 'true' : 'false')."\n";
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echo '"string": '.(boolval("string") ? 'true' : 'false')."\n";
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echo '[1, 2]: '.(boolval([1, 2]) ? 'true' : 'false')."\n";
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echo '[]: '.(boolval([]) ? 'true' : 'false')."\n";
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echo 'stdClass: '.(boolval(new stdClass) ? 'true' : 'false')."\n";
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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0: false
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42: true
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0.0: false
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4.2: true
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"": false
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"string": true
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[1, 2]: true
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[]: false
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stdClass: true
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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>floatval</function></member>
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<member><function>intval</function></member>
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<member><function>strval</function></member>
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<member><function>settype</function></member>
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<member><function>is_bool</function></member>
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<member><link linkend="language.types.type-juggling">Type juggling</link></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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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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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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@ -66,6 +66,7 @@ echo $float_value_of_var; // 122.34343
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>boolval</function></member>
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<member><function>intval</function></member>
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<member><function>strval</function></member>
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<member><function>settype</function></member>
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@ -142,6 +142,7 @@ echo intval(array('foo', 'bar')); // 1
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>boolval</function></member>
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<member><function>floatval</function></member>
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<member><function>strval</function></member>
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<member><function>settype</function></member>
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@ -86,6 +86,7 @@ echo strval(new StrValTest);
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>boolval</function></member>
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<member><function>floatval</function></member>
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<member><function>intval</function></member>
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<member><function>settype</function></member>
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@ -5,6 +5,7 @@
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-->
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<versions>
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<function name='boolval' from='PHP 5 >= 5.5.0'/>
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<function name='debug_zval_dump' from='PHP 4 >= 4.2.0, PHP 5'/>
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<function name='doubleval' from='PHP 4, PHP 5'/>
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<function name='empty' from='PHP 4, PHP 5'/>
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@ -64,4 +65,4 @@ End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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-->
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