Detailed explanation of the method of PHP custom function to determine whether it is submitted by Get/Post/Ajax

这篇文章主要介绍了PHP自定义函数判断是否为Get、Post及Ajax提交的方法,涉及php服务器预定义变量$_SERVER及字符串相关操作技巧,需要的朋友可以参考下

具体如下：

/**
 * 是否是AJAx提交的
 * @return bool
 */
function isAjax(){
  if(isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest'){
    return true;
  }else{
    return false;
  }
}
/**
 * 是否是GET提交的
 */
function isGet(){
  return $_SERVER['REQUEST_METHOD'] == 'GET' ? true : false;
}
/**
 * 是否是POST提交
 * @return int
 */
function isPost() {
  return ($_SERVER['REQUEST_METHOD'] == 'POST' && checkurlHash($GLOBALS['verify']) && (empty($_SERVER['HTTP_REFERER']) || preg_replace("~https?:\/\/([^\:\/]+).*~i", "\\1", $_SERVER['HTTP_REFERER']) == preg_replace("~([^\:]+).*~", "\\1", $_SERVER['HTTP_HOST']))) ? 1 : 0;
}

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