uopz_set_return
(PECL uopz 5, PECL uopz 6, PECL uopz 7)
uopz_set_return — Provide a return value for an existing function
Beschreibung
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.
It is possible to call the original function from the Closure.
Hinweis:
This function replaces uopz_rename().
Parameter-Liste
-
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.
Rückgabewerte
True if succeeded, false otherwise.
Beispiele
Beispiel #1 uopz_set_return() example
<?php
uopz_set_return("strlen", 42);
echo strlen("Banana");
?>Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
42
Beispiel #2 uopz_set_return() example
<?php
uopz_set_return("strlen", function($str) { return strlen($str) * 2; }, true );
echo strlen("Banana");
?>Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
12
Beispiel #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");
?>Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
12
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