You can define an argument as a reference type in the function definition. This will automatically convert the calling arguments into references. Here is a PHP script on how to define an argument as a reference type:<?phpfunction ref_swap(&$a, &$b) { $t = $a; $a = $b; $b = $t;}$x = "PHP";$y = "JSP";print("Before swapping: $x, $y\n");ref_swap($x, $y);print("After swapping: $x, $y\n");?>This script will print:Before swapping: PHP, JSPAfter swapping: JSP, PHP PHP
Topic: Functions
Can You Define an Argument as a Reference Type?
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