[转]10 个有用的 PHP 代码
[代码] 获取浏览器IP地址1function getRemoteIPAddress() {
2 $ip = $_SERVER['REMOTE_ADDR'];
3 return $ip;
4}
[代码] 如果有代理服务器的情况下获取IP
01function getRealIPAddress() {
02 if (!empty($_SERVER['HTTP_CLIENT_IP'])) { // check ip from share internet
03 $ip = $_SERVER['HTTP_CLIENT_IP'];
04 } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { // to check ip is pass from proxy
05 $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
06 } else {
07 $ip = $_SERVER['REMOTE_ADDR'];
08 }
09 return $ip;
10}
[代码] 获取 MySQL 时间戳
1$query = "select UNIX_TIMESTAMP(date_field) as mydate from mytable where 1=1";
2$records = mysql_query($query) or die(mysql_error());
3while($row = mysql_fetch_array($records)) {
4 echo $row;
5}
[代码] 验证日期格式：YYYY-MM-DD
01function checkDateFormat($date) {
02 // match the format of the date
03 if (preg_match("/^({4})-({2})-({2})$/", $date, $parts)) {
04 // check whether the date is valid of not
05 if (checkdate($parts, $parts, $parts)) {
06 return true;
07 } else {
08 return false;
09 }
10 } else {
11 return false;
12 }
13}
[代码] 重定向
1header('Location: http://www.oschina.net/project/zh');
[代码] 发送邮件
01$to = "someone@oschina.net";
02$subject = "Your Subject here";
03$body = "Body of your message here you can use HTML too. e.g. <br><b> Bold </b>";
04$headers = "From: You\r\n";
05$headers .= "Reply-To: info@yoursite.com\r\n";
06$headers .= "Return-Path: info@yoursite.com\r\n";
07$headers .= "X-Mailer: PHP\n";
08$headers .= 'MIME-Version: 1.0' . "\n";
09$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
10mail($to, $subject, $body, $headers);
[代码] BASE64 编码和解码
01function base64url_encode($plainText) {
02 $base64 = base64_encode($plainText);
03 $base64url = strtr($base64, '+/=', '-_,');
04 return $base64url;
05}
06
07function base64url_decode($plainText) {
08 $base64url = strtr($plainText, '-_,', '+/=');
09 $base64 = base64_decode($base64url);
10 return $base64;
11}
[代码] JSON 处理
1$json_data = array ('id'=>1,'name'=>"John",'country'=>'Canada',"work"=>array("Google","Oracle"));
2echo json_encode($json_data);
3
4$json_string='{"id":1,"name":"John","country":"Canada","work":["Google","Oracle"]} ';
5$obj=json_decode($json_string);
6
7// print the parsed data
8echo $obj->name; //displays John
9echo $obj->work; //displays Google
[代码] 检测用户浏览器类型
1$useragent = $_SERVER ['HTTP_USER_AGENT'];
2echo "<b>Your User Agent is</b>: " . $useragent;
[代码] 显示网页源码
1$lines = file('http://www.oschina.net/home/about');
2foreach ($lines as $line_num => $line) {
3 // loop thru each line and prepend line numbers
4 echo "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br>\n";
5}
[代码] 调整服务器时间
1$now = date('Y-m-d-G');
2$now = strftime("%Y-%m-%d-%H", strtotime("$now -8 hours"));
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