cvs: phpdoc /en/language functions.xml

young Mon May 31 04:03:30 2004 EDT Modified files: /phpdoc/en/language functions.xml Log: Add some words about non-scalar default values http://cvs.php.net/diff.php/phpdoc/en/language/functions.xml?r1=1.47&r2=1.48&ty=u Index: phpdoc/en/language/functions.xml diff -u phpdoc/en/language/functions.xml:1.47 phpdoc/en/language/functions.xml:1.48 --- phpdoc/en/language/functions.xml:1.47 Wed May 5 16:19:50 2004 +++ phpdoc/en/language/functions.xml Mon May 31 04:03:30 2004 @@ -1,5 +1,5 @@ <?xml version="1.0" encoding="iso-8859-1"?> -<!-- $Revision: 1.47 $ --> +<!-- $Revision: 1.48 $ --> <chapter id="language.functions"> <title>Functions</title> @@ -249,7 +249,27 @@ Making a cup of espresso. </screen> </para> - + <para> + Also PHP allows you to use arrays and special type NULL as + default values, for example: + <example> + <title>Using non-scalar types as default values</title> + <programlisting role="php"> +<![CDATA[ +<?php +function makecoffee ($types = array("cappuccino"), $coffeeMaker = NULL) +{ + $device = is_null($coffeeMaker) ? "hands" : $coffeeMaker; + return "Making a cup of ".join(", ", $types)." with $device.\n"; +} +echo makecoffee (); +echo makecoffee (array("cappuccino", "lavazza"), "teapot"); +?> +]]> + </programlisting> + </example> + + </para> <simpara> The default value must be a constant expression, not (for example) a variable, a class member or a function call.