note 114138 deleted from functions.user-defined by salathe
| From: | salathe@php.net | Date: | Fri, 21 Nov 2014 14:56:19 +0000 |
| Subject: | note 114138 deleted from functions.user-defined by salathe | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-200984@lists.php.net to get a copy of this message | ||
Note Submitter: lubaev
----
<?php
function overload()
{
$overloadFn = array();
// key = count arguments, value = callback function.
$overloadFn[0] = function() {
return print nl2br("Zero argument. \n");
};
$overloadFn[1] = function($a) {
return print nl2br("One argument. Result: $a \n");
};
$overloadFn[2] = function($a,$b) {
return print nl2br("Two argument. Result: $a, $b \n");
};
$overloadFn[4] = function($a,$b,$c,$d) {
return print nl2br("Four argument. Result: $a, $b, $c, $d \n");
};
$countArgs = func_num_args();
$valueArgs = func_get_args();
if( isset($overloadFn[ $countArgs ]) )
{
return call_user_func_array( $overloadFn[ $countArgs ], $valueArgs );
}
trigger_error("Wrong number of arguments!", E_USER_WARNING);
}
// OVERLOAD
overload(); // Zero argument.
overload(1); // One argument. Result: 1
overload(1,2); // Two argument. Result: 1, 2
overload(1,2,3); // Warning: Wrong number of arguments!
overload(1,2,3,4); // Four argument. Result: 1, 2, 3, 4
overload(1,2,3,4,5); // Warning: Wrong number of arguments!
?>