PHP回调函数及匿名函数概念与用法详解_php技巧_

'; } function main($callback){ echo 'execute main start.
'; $callback(); echo 'execute main end.
'; } main('callback'); //结果 ecute main start. execute no parameters callback. execute main end. 

$b.
"; } $func = 'callback'; call_user_func($func, 1,2); call_user_func_array($func, array(1,2)); //结果 1<====>2. 1<====>2. 

$b.
"; } public static function staticCallback($a,$b){ echo "staticCallback $a<====>$b.
"; } } //非静态方法调用方式一 $test = new Test(); call_user_func(array($test, 'callback'), 1,2); call_user_func_array(array($test, 'callback'), array(1,2)); //非静态方法调用方式二 $func = 'callback'; $test->$func(7,9); //静态方法调用方式 call_user_func(array('Test', 'staticCallback'), 4,6); call_user_func_array(array('Test', 'staticCallback'), array(4,6)); call_user_func_array("Test::staticCallback", array(4,6)); //结果 callback 1<====>2. callback 1<====>2. callback 7<====>9. staticCallback 4<====>6. staticCallback 4<====>6. staticCallback 4<====>6. 

'; }; $closureFunc("hello world!"); //结果 hello world! 

"; }; $func(23); }; $func = $closureFunc("lvfk"); //结果 lvfk--男--23 

"; $func = function()use ($name,$sex){ echo "$name--$sex
"; }; return $func; }; $func = $closureFunc("lvfk"); $func(); $func(); //结果 closureFunc lvfk+++男 lvfk--男 lvfk--男 

"; $func = function()use ($name,&$age){ $age++; echo "$name--$age
"; }; return $func; }; $func = $closureFunc("lvfk"); $func(); $func(); $func(); //结果 lvfk+++1 lvfk--2 lvfk--3 lvfk--4