uopz_set_return

(PECL uopz 5)

uopz_set_returnProvide a return value for an existing function

说明

bool uopz_set_return ( string $function , mixed $value [, bool $execute = FALSE ] )
bool uopz_set_return ( string $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().

参数

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.

返回值

True if succeeded, false otherwise.

范例

Example #1 uopz_set_return() example

<?php
uopz_set_return
("strlen"42);
echo 
strlen("Banana");
?>

以上例程会输出:

42

Example #2 uopz_set_return() example

<?php
uopz_set_return
("strlen", function($str) { return strlen($str) * 2; }, true );
echo 
strlen("Banana");
?>

以上例程会输出:

12

Example #3 uopz_set_return() class example

<?php
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");
?>

以上例程会输出:

12
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