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PHP可变函数的经典用法示例

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">
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 2014-11-27 12:10:23 转载来源: 网络整理/侵权必删

本文为大家讲解的是PHP可变函数的经典用法示例，感兴趣的同学参考下。 <?php function map($fun, $list,$params=array()){     $acc=NULL;     $last=array_push($params, NULL,$acc)-1;     foreach($list as $params[$last-1]){     //第一次见这种写法感觉很神奇         $params[$last]=call_user_func_array($fun , $params  );     }     $acc=array_pop($params);     return $acc; } function add

本文为大家讲解的是PHP可变函数的经典用法示例，感兴趣的同学参考下。


<?php
function map($fun, $list,$params=array()){
    $acc=NULL;
    $last=array_push($params, NULL,$acc)-1;
    foreach($list as $params[$last-1]){     //第一次见这种写法感觉很神奇
        $params[$last]=call_user_func_array($fun , $params  );
    }
    $acc=array_pop($params);
    return $acc;
}
function add($element,$acc){
    if ($acc == NULL);
    return $acc=$element+$acc;
}
$result=0;
$result=addTo($result,1);
$result=addTo($result,2);
$result=addTo($result,3);
echo "result = $resultn";
$result=0;
$result=map('addTo',array(1,2,3));
echo "result= $resultn";
?>


这样以后累加 类似的计算就方便多了。。。


标签: PHP 可变 函数 经典 用法 示例


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