PHP验证表单的具体实现方式-php手册-php.cn

学习PHP验证表单的具体代码如下：

 php 
 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('/(^([d]{15}|[d]{18}|[d]{17}x)$)/',$str))?true:false; 
  } 
  
  //验证邮件地址 
  function fun_email($str){ 
  return (preg_match('/^[_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,4}$/',$str))?true:false; 
  } 
  //验证电话号码 
  function fun_phone($str) 
  { 
  
  return (preg_match("/^(((d{3}))|(d{3}-))?((0d{2,3})|0d{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]+[/=?%-&_~`@[]':+!]*([^>""])*$/",$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 $data; return (preg_match("/^(((d{3}))|(d{3}-))?((0d{2,3})|0d{2,3}-)?[1-9]d{6,7}$/",$str))?true:false; 
  } 
  
  // 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][$k2]=str_replace(" ","br> ",$data[$k1][$k2]);  
  } 
  } 
  else 
  { 
  $data[$k1]=nl2br(htmlspecialchars($data[$k1])); 
  $data[$k1]=str_replace(" "," ",$data[$k1]); 
   $data[$k1]=str_replace(" ","br> ",$data[$k1]);  
  } 
  } 
  } 
  else 
  { 
   $data=nl2br(htmlspecialchars($data));  
   $data=str_replace(" "," ",$data);  
   $data=str_replace(" ","br> ",$data);  
  } 
  Return $data; 
  } 
 } 
 if (is_array($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][$k2]=str_replace(" ","br> ",$data[$k1][$k2]);  
  } 
  } 
  else 
  { 
  $data[$k1]=nl2br(htmlspecialchars($data[$k1])); 
  $data[$k1]=str_replace(" "," ",$data[$k1]); 
   $data[$k1]=str_replace(" ","br> ",$data[$k1]);  
  } 
  } 
 } 
 else 
 { 
   $data=nl2br(htmlspecialchars($data));  
   $data=str_replace(" "," ",$data);  
   $data=str_replace(" ","br> ",$data);  
 } 
 Return $data; 
 } 
 } 
  ?>