Detailed introduction to analyzing var_export using PHP_PHP tutorial

复制代码 代码如下:

/**
* PHP implements var_export(); function
*/
   $arr = array("1","2","3");
   $arr1 = array('a'=>NULL,'b'=>array('1'=>3));
   var_export($arr);
   //var_export($arr1);
  function varExport($arr){
     $ret = "array( ";
     foreach($arr as $k=>$v){
        $ret .= (is_numeric($k) ? $k : "'".$k."'");
        $ret .= ' => ';
        $_type = strtolower(gettype($v));
        switch($_type){
           case 'integer':
               $ret .= $v." ,";
               break;
           case 'array':
                $ret .= varExport($v).',';
                break;
           case 'null':
                $ret .= "NULL ,";
                break;
           default:
               $ret  .= "'".$v."',";
               break;
        }
     }
     $ret .= " )";
     return $ret;
  }
  //echo varExport($arr);
   echo varExport($arr);
   //bool is_numeric ( mixed $var )如果 var 是数字和数字字符串则返回 TRUE，否则返回 FALSE
   //故不能用 is_numeric 验证是否为int类型。。。
?>

http://www.bkjia.com/PHPjc/327727.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/327727.htmlTechArticle复制代码 代码如下: ?php /*** PHP implements var_export(); function*/ $arr = array("1","2","3"); $arr1 = array('a'=NULL,'b'=array('1'=3)); var_export($arr); //var_export($arr1); f...