(PECL uopz 5)
uopz_set_return — Provide a return value for an existing function
$class
], string $function
, mixed $value
[, bool $execute
= FALSE
] )
Sets the return value of the function
to value
. If value
is a Closure and execute
is set, the Closure will be executed in place of the original function.
Note:
This function replaces uopz_rename().
class
The name of the class containing the function
function
The name of an existing function
value
The value the function should return. If a Closure is provided and the execute flag is set, the Closure will be executed in place of the original function.
execute
If true, and a Closure was provided as the value, the Closure will be executed in place of the original function.
True if succeeded, false otherwise.
Example #1 uopz_set_return() example
<?php
uopz_set_return("strlen", 42);
echo strlen("Banana");
?>
以上例程的输出类似于:
42
Example #2 uopz_set_return() example
<?php
uopz_set_return("strlen", function($str) { return strlen($str) * 2; }, true );
echo strlen("Banana");
?>
以上例程的输出类似于:
12
Example #3 uopz_set_return() class example
class My {
public static function strlen($arg) {
return strlen($arg);
}
}
uopz_set_return(My::class, "strlen", function($str) { return strlen($str) * 2; }, true );
echo My::strlen("Banana");
以上例程的输出类似于:
12