[php] php lambda

1 <?php2 // http://cn.php.net/manual/zh/function.create-function.php3 $lambda = create_function('$a,$b','return ($a > $b)? $a : $b;');4 var_dump($lambda);5 echo $lambda(1,2);

 1 function do_foreach($arrData,$func) { 2     $arrResult = array();  3     foreach($arrData as $row) { 4         if($return = $func($row)) { 5             $arrResult[] = $return; 6         } 7     } 8     return $arrResult; 9 }10 11 // 所有元素+112 $func1 = 'return $row + 1;';13 var_dump(do_foreach(array(1,2,3,4),create_function('$row',$func1)));14 15 // 所有元素平方16 $func1 = 'return $row * $row;';17 var_dump(do_foreach(array(1,2,3,4),create_function('$row',$func1)));18 19 // 只是输出20 $func1 = 'echo $row,"<br/>";';21 do_foreach(array(1,2,3,4),create_function('$row',$func1));