PHP 8.5.0 Beta 3 available for testing

ReflectionFunction::invoke

(PHP 5, PHP 7, PHP 8)

ReflectionFunction::invoke โ€” ้–ขๆ•ฐใ‚’่ตทๅ‹•ใ™ใ‚‹

่ชฌๆ˜Ž

public ReflectionFunction::invoke(mixed ...$args): mixed

่ชฟในใŸ้–ขๆ•ฐใ‚’่ตทๅ‹•ใ—ใพใ™ใ€‚

ใƒ‘ใƒฉใƒกใƒผใ‚ฟ

args

ๆธกใ™ๅผ•ๆ•ฐใฎใƒชใ‚นใƒˆใ€‚ๅฏๅค‰้•ทใฎๅผ•ๆ•ฐใ‚’ๆŒ‡ๅฎšใงใใ€ call_user_func() ใจๅŒใ˜ใ‚ˆใ†ใซใ—ใฆ้–ขๆ•ฐใซๆธกใ•ใ‚Œใพใ™ใ€‚

ๆˆปใ‚Šๅ€ค

่ตทๅ‹•ใ—ใŸ้–ขๆ•ฐใฎ็ตๆžœใ‚’่ฟ”ใ—ใพใ™ใ€‚

ไพ‹

ไพ‹1 ReflectionFunction::invoke() ใฎไพ‹

<?php
function title($title, $name)
{
return
sprintf("%s. %s\r\n", $title, $name);
}

$function = new ReflectionFunction('title');

echo
$function->invoke('Dr', 'Phil');
?>

ไธŠใฎไพ‹ใฎๅ‡บๅŠ›ใฏไปฅไธ‹ใจใชใ‚Šใพใ™ใ€‚

Dr. Phil

ๆณจๆ„

ๆณจๆ„:

ReflectionFunction::invoke() ใฏใ€ ใƒชใƒ•ใ‚กใƒฌใƒณใ‚นใŒๅผ•ๆ•ฐใซๆœŸๅพ…ใ•ใ‚Œใฆใ„ใ‚‹ๅ ดๅˆใฏไฝฟใˆใพใ›ใ‚“ใ€‚ ใใฎๅ ดๅˆใฏใ€(ๅผ•ๆ•ฐใƒชใ‚นใƒˆใซใƒชใƒ•ใ‚กใƒฌใƒณใ‚นใ‚’ๆธกใ—ใฆ) ReflectionFunction::invokeArgs() ใ‚’ไปฃใ‚ใ‚Šใซไฝฟใ†ในใใงใ™ใ€‚

ๅ‚่€ƒ

  • ReflectionFunction::export() - ้–ขๆ•ฐใ‚’ใ‚จใ‚ฏใ‚นใƒใƒผใƒˆใ™ใ‚‹
  • __invoke()
  • call_user_func() - ๆœ€ๅˆใฎๅผ•ๆ•ฐใงๆŒ‡ๅฎšใ—ใŸใ‚ณใƒผใƒซใƒใƒƒใ‚ฏ้–ขๆ•ฐใ‚’ใ‚ณใƒผใƒซใ™ใ‚‹

๏ผ‹add a note

User Contributed Notes 1 note

up
1
spark at limao dot com dot br ยถ
14 years ago
I know Reflections classes have a lot of power, but sometimes all we need is to store a annonymus function or even create a simple callback somewhere.

so here it is, the Callback class:
<?php
class Callback{
private
$name = false;

public function
Callback($obj,$call=false){
$name = array($obj);
if(
$call) $name[] = $call;

$this->name = $name;
}
public function
invoke($params=array()){
return
call_user_func_array($this->name,$params);
}
}
?>

Usage:
<?php
function sayName(){
return
"goku";
}

$myVar = new Callback("sayName");

echo
"Hi, I am ".$myVar->invoke()."!";

//also works with methods: new Callback($obj,"method");
?>
To Top