php奇技淫巧

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php闭包使用示例

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<?php

class A
{

    public function handel(callable $callback)
    {
        call_user_func_array($callback, [1,2]);
        
    }
}

$obj = new A();

$obj->handel(function ($a, $b)
{
    echo $a . $b;
    
});

XML字符串转数组

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$xmlObj = simplexml_load_string($xmlStr);
$xmlArr = json_decode(json_encode($xmlObj) , true);
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// 论如何用最好的编程语言获得当天零点的UNIX时间戳
echo strtotime("today midnight");

//处理数据
$_POST=array_map('addslashes',$_POST);

A better way to do a lot of IF statements:

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switch(TRUE){
  case email_is_valid($email):
    // Do something.
    break;
  case username_is_valid($user):
    // Do stuff.
    break;
  case pass_too_short($pass) && pass_not_save($pass):
    // Other stuff.
    break;
}