validation.inc.php

极酷的PHP文本留言本

<?php
basename(__FILE__) == basename($PHP_SELF) ? die('validation.inc.php, contains all functions for <a href="http://langfang.info/">langfang.info</a>. <h2><a href="index.php">Local guestbook is here</a></h2>') : '';

function IsDigit($str) {  
  if (ereg( "^(0|[1-9][0-9]*)$",$str, $regs)) {   
    return true;
  }
  else {
    return false;
  }
}

function IsMoney($str) {  
  if (ereg( "^([0-9]+|[0-9]{1,3}(,[0-9]{3})*)(\.[0-9]{1,2})?$",$str, $regs)) {   
    return true;
  }
  else {
    return false;
  }
}
   
function IsEmailAddress($str) {  
  if (ereg( "^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*$",$str, $regs)) {
    return true;
  }
  else {
    return false;
  }
}
function IsUrl($url){
	 if (eregi("^((ht|f)tp://)((([a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4}))|(([0-9]{1,3}\.){3}([0-9]{1,3})))((/|\?)[a-z0-9~#%&'_\+=:\?\.-]*)*)$", $url, $regs)){
		 return true;
	 }
	 else {
		 return false;
	 }
}

function IsAlphanumeric($str) {  
  if (ereg( "^[a-z0-9]+$",$str, $regs)) {   
    return true;
  }
  else {
    return false;
  }
}


?>