编程时间长了，大家见过很多函数功能吧，比如获取用户IP等等，现在我将常用的PHP函数做个总结，方便大家COPY和使用。
<?php
//获取用户IP
function getIp()
{
$ip = "";
if (getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknow')) {
$ip = getenv('HTTP_CLIENT_IP');
} elseif (getenv('REMOTE_ADD') && strcasecmp(getenv('REMOTE_ADD'), 'unknow')) {
$ip = getenv('REMOTE_ADD');
} elseif (isset($_SERVER['REMOTE_ADDR']) && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknow')) {
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
//快速替换字符串
//$arrayName = array('h'=>'s','o'=>'t','l'=>'xx');
//echo strsReplace('hello',$arrayName);
function strsReplace($str, $replaces)
{
$subject=$str;
foreach ($replaces as $k => $v)
$subject = str_replace($k, $v, $subject);
return $subject;
}
//规范文件名
//$filename='"<>/\\\asda/.,psd|"';
//echo tripFilename($filename);
function tripFilename($filename)
{
//$s=array("/","\\","?","*","<",">",'"',"|",",","'");//使用时请删除屏蔽
return str_replace($s,"",$filename);
}
//PHP判断数组维度
//$arr=array('yiyi'=>1212,'haha'=>array('heihei'=>array(array("a")),"b"));
//echo getMaxDim($arr);
function getMaxDim($vDim)
{
if (!is_array($vDim))
return 0;
else {
$max1 = 0;
foreach ($vDim as $item1) {
$t1 = getMaxDim($item1);
if ($t1 > $max1)
$max1 = $t1;
}
return $max1 + 1;
}
}
//给数字加小数点,默认格式为452.00
//echo fee(452);
function fee($fee, $size = 2)
{
$fee = trim($fee);
if (empty($fee))
return '0.00';
if (!is_numeric($fee))
return 'err';
return number_format($fee, $size, '.', '');
}
//获取随机序列(注:实测数字最好9位一下)
//echo random(9,1);
//echo random(25);
function random($length, $numeric = 0)
{
PHP_VERSION < '4.2.0' && mt_srand((double) microtime() * 100000000000);
if ($numeric) {
$hash = sprintf('%0' . $length . 'd', mt_rand(0, pow(10, $length) - 1));
} else {
$hash = '';
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
$max = strlen($chars) - 1;
for ($i = 0; $i < $length; $i++) {
$hash .= $chars[mt_rand(0, $max)];
}
}
return $hash;
}
//错误提醒
function alertBack($msg = "")
{
$html = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />
<script type=\"text/javascript\" charset=\"utf-8\">
alert('" . $msg . "');
window.history.back(-1);
</script>";
echo $html;
exit();
}
//提醒跳转
function alertGoto($url, $msg)
{
$html = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />
<script type=\"text/javascript\" charset=\"utf-8\">
alert('" . $msg . "');
top.location = \"" . $url . "\";
</script>";
echo $html;
exit();
}
//建立文件夹
function createDir($path)
{
if (!file_exists($path)) {
createDir(dirname($path));
mkdir($path);
}
}
//删除文件夹
function deleteDir($dir)
{
$dh = opendir($dir);
while ($file = readdir($dh))
if ($file != "." && $file != "..") {
$fullpath = $dir . "/" . $file;
if (!is_dir($fullpath))
unlink($fullpath);
else
deleteDir($fullpath);
}
closedir($dh);
if (rmdir($dir))
return true;
else
return false;
}
//获取扩展名
function getFileType($filename)
{
if (substr_count($filename, ".") == 0) { // 检查文件名中是否有.号。
return; // 返回空
} else if (substr($filename, -1) == ".") { // 检查是否以.结尾，即无扩展名
return; // 返回空
} else {
$fileType = strrchr($filename, "."); // 从.号处切割
$fileType = substr($fileType, 1); // 去除.号
return $fileType; // 返回
}
}
//匹配手机号
function checkTel($tel)
{
if (strlen($tel) != 11)
return false;
return preg_match('/^1(3|5|8)[0-9]{9}$/', $tel);
}
//检查EMAIL格式
function checkEmail($email)
{
if ($email == '')
return false;
if (eregi("^[_\.0-9a-z][email protected]([0-9a-z][0-9a-z]+\.)+[a-z]{2,3}$", $email))
return true;
return false;
}
//SMTP发送邮件
function sendMail($mail)
{
global $m;
if ($m->cfg['mailMethod'] == 'mail()') {
}
if ($m->cfg['mailMethod'] == 'smtp') {
include_once "lib/smtp.class.php";
$smtpserver = $m->cfg['smtpServer']; //您的smtp服务器的地址
$port = empty($m->cfg['smtpPort']) ? '25' : $m->cfg['smtpPort']; //smtp服务器的端口，一般是 25
$smtpuser = $m->cfg['smtpCount']; //您登录smtp服务器的用户名
$smtppwd = $m->cfg['smtpPas']; //您登录smtp服务器的密码
$mailtype = "HTML"; //邮件的类型，可选值是 TXT 或 HTML ,TXT 表示是纯文本的邮件,HTML 表示是 html格式的邮件
$sender = $m->cfg['smtpCount']; //发件人,一般要与您登录smtp服务器的用户名($smtpuser)相同,否则可能会因为smtp服务器的设置导致发送失败
$smtp = new smtp($smtpserver, $port, true, $smtpuser, $smtppwd, $sender);
$smtp->debug = true; //是否开启调试,只在测试程序时使用，正式使用时请将此行注释
$send = $smtp->sendmail($mail['to'], $sender, $mail['subject'], $mail['body'], $mailtype);
if ($send == 1)
return true;
return $this->smtp->logs;
}
}
//检查身份证有效性
function checkId($id_card)
{
if (strlen($id_card) == 18) {
return idcard_checksum18($id_card);
} elseif ((strlen($id_card) == 15)) {
$id_card = idcard_15to18($id_card);
return idcard_checksum18($id_card);
} else {
return false;
}
}
// 计算身份证校验码，根据国家标准GB 11643-1999
function idcard_verify_number($idcard_base)
{
if (strlen($idcard_base) != 17) {
return false;
}
//加权因子
$factor = array(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2);
//校验码对应值
$verify_number_list = array('1','0','X','9','8','7','6','5','4','3','2');
$checksum = 0;
for ($i = 0; $i < strlen($idcard_base); $i++) {
$checksum += substr($idcard_base, $i, 1) * $factor[$i];
}
$mod = $checksum % 11;
$verify_number = $verify_number_list[$mod];
return $verify_number;
}
// 将15位身份证升级到18位
function idcard_15to18($idcard)
{
if (strlen($idcard) != 15) {
return false;
} else {
// 如果身份证顺序码是996 997 998 999，这些是为百岁以上老人的特殊编码
if (array_search(substr($idcard, 12, 3), array(
'996',
'997',
'998',
'999'
)) !== false) {
$idcard = substr($idcard, 0, 6) . '18' . substr($idcard, 6, 9);
} else {
$idcard = substr($idcard, 0, 6) . '19' . substr($idcard, 6, 9);
}
}
$idcard = $idcard . idcard_verify_number($idcard);
return $idcard;
}
// 18位身份证校验码有效性检查
function idcard_checksum18($idcard)
{
if (strlen($idcard) != 18) {
return false;
}
$idcard_base = substr($idcard, 0, 17);
if (idcard_verify_number($idcard_base) != strtoupper(substr($idcard, 17, 1))) {
return false;
} else {
return true;
}
}
//获取星期
//echo getWeek('2013-09-02');
function getWeek($day)
{
$days = array('周日','周一','周二','周三','周四','周五','周六');
$day = explode('-', $day);
return $days[date('w', mktime(0, 0, 0, $day[1], $day[2], $day[0]))];
}
?>
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