@ 2013-01-11T14:32:11Z <?php
function decorate(callable $fn, callable $decorator)
{
$wrapper = $decorator($fn);
return function() use ($wrapper) {
return call_user_func_array($wrapper, func_get_args());
};
}
function foo($bar)
{
throw new Exception("Error $bar!");
}
function catch_all_exceptions(callable $fn)
{
return function() use ($fn) {
try {
return call_user_func_array($fn, func_get_args());
} catch (\Exception $e) {
echo "catch_all_exceptions: Caught Exception: $e\n";
}
};
}
function once(callable $fn) {
return function() use ($fn) {
static $return;
static $called = false;
if (!$called) {
$return = call_user_func_array($fn, func_get_args());
$called = true;
}
return $return;
};
}
function do_something_before(callable $fn)
{
return function() use ($fn) {
echo "Before!\n";
return call_user_func_array($fn, func_get_args());
};
}
$bar = decorate(function() { echo "Hello\n"; }, "once");
$bar();
$bar();
$bar();
$foo = decorate(decorate("foo", "catch_all_exceptions"), "do_something_before");
var_dump($foo("bar"));
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Output for 7.0.0 - 7.0.20 , 7.1.0 - 7.1.20 , 7.2.6 - 7.2.33 , 7.3.12 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 Hello
Before!
catch_all_exceptions: Caught Exception: Exception: Error bar! in /in/lrk7A:14
Stack trace:
#0 /in/lrk7A(21): foo('bar')
#1 /in/lrk7A(8): {closure}('bar')
#2 /in/lrk7A(46): {closure}('bar')
#3 /in/lrk7A(8): {closure}('bar')
#4 /in/lrk7A(56): {closure}('bar')
#5 {main}
NULL
Output for 5.4.0 - 5.4.45 , 5.5.0 - 5.5.36 , 5.6.0 - 5.6.28 Hello
Before!
catch_all_exceptions: Caught Exception: exception 'Exception' with message 'Error bar!' in /in/lrk7A:14
Stack trace:
#0 [internal function]: foo('bar')
#1 /in/lrk7A(21): call_user_func_array('foo', Array)
#2 [internal function]: {closure}('bar')
#3 /in/lrk7A(8): call_user_func_array(Object(Closure), Array)
#4 [internal function]: {closure}('bar')
#5 /in/lrk7A(46): call_user_func_array(Object(Closure), Array)
#6 [internal function]: {closure}('bar')
#7 /in/lrk7A(8): call_user_func_array(Object(Closure), Array)
#8 /in/lrk7A(56): {closure}('bar')
#9 {main}
NULL
Output for 5.3.0 - 5.3.29 Catchable fatal error: Argument 1 passed to decorate() must be an instance of callable, instance of Closure given, called in /in/lrk7A on line 50 and defined in /in/lrk7A on line 3
Process exited with code 255 . Output for 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 Parse error: syntax error, unexpected T_FUNCTION in /in/lrk7A on line 7
Process exited with code 255 . Output for 5.0.0 - 5.0.5 Parse error: parse error, unexpected T_FUNCTION in /in/lrk7A on line 7
Process exited with code 255 . Output for 4.4.2 - 4.4.9 Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/lrk7A on line 3
Process exited with code 255 . Output for 4.3.0 - 4.3.1 , 4.3.5 - 4.3.11 , 4.4.0 - 4.4.1 Parse error: parse error, unexpected T_STRING, expecting ')' in /in/lrk7A on line 3
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error, expecting `')'' in /in/lrk7A on line 3
Process exited with code 255 . preferences:dark mode live preview
244.76 ms | 401 KiB | 347 Q