以下为引用的内容：

//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)
{

转自：网页教学网[www.webjx.com]

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 $data; return (preg_match("/^(((d{3}))|(d{3}-))?((0d{2,3})|0d{2,3}-)?[1-9]d{6,7}$/",$str))?true:false;
}
//验证邮编
function fun_zip($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;

}
转自：网页教学网[www.webjx.com]
// 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 $data;
}
转自：网页教学网[www.webjx.com]
// 数据显示 还原 数据格式 主要用于内容输出 传入值可为字符串 或 一/二维数组
// 执行此方法前应先data_revert()，表单内容无须此还原
function data_show(&$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][$k2]=str_replace(" ","
",$data[$k1][$k2]);
}
}
else
{
$data[$k1]=nl2br(htmlspecialchars($data[$k1]));
$data[$k1]=str_replace(" "," ",$data[$k1]);
$data[$k1]=str_replace(" ","
",$data[$k1]);
}
}
}
else
{
$data=nl2br(htmlspecialchars($data));
$data=str_replace(" "," ",$data);
$data=str_replace(" ","
",$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][$k2]=str_replace(" ","
",$data[$k1][$k2]);
}
}
else
{
$data[$k1]=nl2br(htmlspecialchars($data[$k1]));
$data[$k1]=str_replace(" "," ",$data[$k1]);
$data[$k1]=str_replace(" ","
",$data[$k1]);
}
}
}
else
{
$data=nl2br(htmlspecialchars($data));
$data=str_replace(" "," ",$data);
$data=str_replace(" ","
",$data);
}
Return $data;
}
}
?>