Function with an Optional Argument : Parameters « Functions « PHP






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Function with an Optional Argument

<html>
<head>
<title>Function with an Optional Argument</title>
</head>
<body>
<?php
function fontWrap( $txt, $size=3 ){
   print "<font size=\"$size\">$txt</font>";
}

fontWrap("call 1<br>",5);
fontWrap("call 2<br>");
fontWrap("call 3<br>");
fontWrap("call 4<br>");
?>
</body>
</html>








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7.Using a Function Call to Pass an Argument to a Function by Reference
8.Declaring a Function That Requires Arguments
9.A Function with an Optional Argument
10.Accessing Function Parameters
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13.Changing argument values
14.Defining and Calling a two-argument function,
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17.Creating Functions That Take a Variable Number of Arguments
18.Creating a capitalize function with a default parameter $each
19.Default Parameters
20.Define whether a variable is passed by value or reference
21.Passing By Reference
22.Making arguments be passed by reference
23.Using Optional Parameters