Usage examples of common php form validation classes_php skills

This article mainly introduces the usage of common form validation classes in PHP. It analyzes common PHP validation techniques for form elements with examples. Friends in need can refer to the following.

The examples in this article describe the usage of common PHP form validation classes. Share it with everyone for your reference. The details are as follows:

<?php
/**
* 页面作用：常用表单验证类
* 作 者：欣然随风
* QQ：276624915
*/
class class_post
{
//验证是否为指定长度的字母/数字组合
function fun_text1($num1,$num2,$str)
{
   Return (preg_match("/^[a-zA-Z0-9]{".$num1.",".$num2."}$/",$str))?true:false;
}
//验证是否为指定长度数字
function fun_text2($num1,$num2,$str)
{
   return (preg_match("/^[0-9]{".$num1.",".$num2."}$/i",$str))?true:false;
}
//验证是否为指定长度汉字
function fun_font($num1,$num2,$str)
{
// preg_match("/^[\xa0-\xff]{1,4}$/", $string);
 
  return (preg_match("/^([\x81-\xfe][\x40-\xfe]){".$num1.",".$num2."}$/",$str))?true:false;
}
//验证身份证号码
function fun_status($str)
{
   return (preg_match(&#39;/(^([\d]{15}|[\d]{18}|[\d]{17}x)$)/&#39;,$str))?true:false;
}
//验证邮件地址
function fun_email($str){
   return (preg_match(&#39;/^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,4}$/&#39;,$str))?true:false;
}
//验证电话号码
function fun_phone($str)
{
  return (preg_match("/^((\(\d{3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}$/",$str))?true:false;
}
//验证邮编
function fun_zip($str)
{
  return (preg_match("/^[1-9]\d{5}$/",$str))?true:false;
}
//验证url地址
function fun_url($str)
{
  return (preg_match("/^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\&#39;:+!]*([^<>\"\"])*$/",$str))?true:false;
}
// 数据入库 转义 特殊字符 传入值可为字符串 或 一维数组
function data_join(&$data)
{
  if(get_magic_quotes_gpc() == false)
  {
  if (is_array($data))
  {
   foreach ($data as $k => $v)
   {
   $data[$k] = addslashes($v);
   }
  }
  else
  {
  $data = addslashes($data);
  }
  }
  Return $data;
}
// 数据出库 还原 特殊字符 传入值可为字符串 或 一/二维数组
function data_revert(&$data)
{
  if (is_array($data))
  {
  foreach ($data as $k1 => $v1)
  {
   if (is_array($v1))
   {
   foreach ($v1 as $k2 => $v2)
   {
   $data[$k1][$k2] = stripslashes($v2);
   }
   }
   else
   {
   $data[$k1] = stripslashes($v1);
   }
  }
  }
  else
  {
  $data = stripslashes($data);
  }
  Return $data;
}
// 数据显示 还原 数据格式 主要用于内容输出 传入值可为字符串 或 一/二维数组
// 执行此方法前应先data_revert()，表单内容无须此还原
function data_show(&$data)
{
  if (is_array($data))
  {
  foreach ($data as $k1 => $v1)
  {
   if (is_array($v1))
   {
   foreach ($v1 as $k2 => $v2)
   {
   $data[$k1][$k2]=nl2br(htmlspecialchars($data[$k1][$k2]));
   $data[$k1][$k2]=str_replace(" "," ",$data[$k1][$k2]);
   $data[$k1][$k2]=str_replace("\n","<br>\n",$data[$k1][$k2]);
   }
   }
   else
   {
   $data[$k1]=nl2br(htmlspecialchars($data[$k1]));
   $data[$k1]=str_replace(" "," ",$data[$k1]);
   $data[$k1]=str_replace("\n","<br>\n",$data[$k1]);
   }
  }
  }
  else
  {
  $data=nl2br(htmlspecialchars($data));
  $data=str_replace(" "," ",$data);
  $data=str_replace("\n","<br>\n",$data);
  }
  Return $data;
}
}
?>

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