[转]10 个有用的 PHP 代码_PHP_编程开发_程序员俱乐部

[代码] 获取浏览器IP地址

1 function 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

01 function 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()); 3 while($row = mysql_fetch_array($records)) { 4 ????echo $row; 5 }

[代码] 验证日期格式：YYYY-MM-DD

01 function checkDateFormat($date) { 02 ????// match the format of the date 03 ????if (preg_match("/^([0-9]{4})-([0-9]{2})-([0-9]{2})$/", $date, $parts)) { 04 ????????// check whether the date is valid of not 05 ????????if (checkdate($parts[2], $parts[3], $parts[1])) { 06 ????????????return true; 07 ????????} else { 08 ????????????return false; 09 ????????} 10 ????} else { 11 ????????return false; 12 ????} 13 }

[代码] 重定向

1 header('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 $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n"; 10 mail($to, $subject, $body, $headers);

[代码] BASE64 编码和解码

01 function base64url_encode($plainText) { 02 ????$base64 = base64_encode($plainText); 03 ????$base64url = strtr($base64, '+/=', '-_,'); 04 ????return $base64url; 05 } 06 ?? 07 function base64url_decode($plainText) { 08 ????$base64url = strtr($plainText, '-_,', '+/='); 09 ????$base64 = base64_decode($base64url); 10 ????return $base64; 11 }

[代码] JSON 处理

1 $json_data = array ('id'=>1,'name'=>"John",'country'=>'Canada',"work"=>array("Google","Oracle")); 2 echo json_encode($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 8 echo $obj->name; //displays John 9 echo $obj->work[0]; //displays Google

[代码] 检测用户浏览器类型

1 $useragent = $_SERVER ['HTTP_USER_AGENT']; 2 echo "<b>Your User Agent is</b>: " . $useragent;

[代码] 显示网页源码

1 $lines = file('http://www.oschina.net/home/about'); 2 foreach ($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"));