PHP常用函数
Tag: 函数 | Author: 老蒋 |
- function GetIP() { //获取IP
- if ($_SERVER["HTTP_X_FORWARDED_FOR"])
- $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
- else if ($_SERVER["HTTP_CLIENT_IP"])
- $ip = $_SERVER["HTTP_CLIENT_IP"];
- else if ($_SERVER["REMOTE_ADDR"])
- $ip = $_SERVER["REMOTE_ADDR"];
- else if (getenv("HTTP_X_FORWARDED_FOR")) //开源代码OSPHP.COM.Cn
- $ip = getenv("HTTP_X_FORWARDED_FOR");
- else if (getenv("HTTP_CLIENT_IP"))
- $ip = getenv("HTTP_CLIENT_IP");
- else if (getenv("REMOTE_ADDR"))
- $ip = getenv("REMOTE_ADDR");
- else
- $ip = "Unknown";
- return $ip;
- }
- function DateAdd($date, $int, $unit = "d") { //时间的增加（还可以改进成时分秒都可以增加，有时间再补上）
- $dateArr = explode("-", $date);
- $value[$unit] = $int;
- return date("Y-m-d", mktime(0,0,0, $dateArr[1] + $value['m'], $dateArr[2] + $value['d'], $dateArr[0] + $value['y'])); //oSPHP.COM.CN
- }
- function GetWeekDay($date) { //计算出给出的日期是星期几
- $dateArr = explode("-", $date);
- return date("w", mktime(0,0,0,$dateArr[1],$dateArr[2],$dateArr[0]));
- }
- function check_date($date) { //检查日期是否合法日期
- $dateArr = explode("-", $date);
- if (is_numeric($dateArr[0]) && is_numeric($dateArr[1]) && is_numeric($dateArr[2])) {
- return checkdate($dateArr[1],$dateArr[2],$dateArr[0]);
- }
- return false;
- }
- function check_time($time) { //检查时间是否合法时间 //开源代码OSPhP.COm.CN
- $timeArr = explode(":", $time);
- if (is_numeric($timeArr[0]) && is_numeric($timeArr[1]) && is_numeric($timeArr[2])) {
- if (($timeArr[0] >= 0 && $timeArr[0] <= 23) && ($timeArr[1] >= 0 && $timeArr[1] <= 59) && ($timeArr[2] >= 0 && $timeArr[2] <= 59)) //OSPHP.COM.Cn开源
- return true;
- else
- return false;
- }
- return false;
- }
- function DateDiff($date1, $date2, $unit = "") { //时间比较函数，返回两个日期相差几秒、几分钟、几小时或几天
- switch ($unit) {
- case 's':
- $dividend = 1;
- break;
- case 'i':
- $dividend = 60; //OSPHP.COM.Cn开源
- break;
- case 'h':
- $dividend = 3600;
- break;
- case 'd':
- $dividend = 86400;
- break;
- default:
- $dividend = 86400;
- }
- $time1 = strtotime($date1);
- $time2 = strtotime($date2);
- if ($time1 && $time2)
- return (float)($time1 - $time2) / $dividend;
- return false;
- }
- PHP重定向
- 方法一：header("Location: index.php");
- 方法二：echo "<scrīpt>window.location ="$PHP_SELF";</scrīpt>";
- 方法三：echo "<META HTTP-EQUIV="Refresh" CONTENT="0; URL=index.php">";
- 获取访问者浏览器
- function browse_infor()
- {
- $browser="";$browserver="";
- $Browsers =array("Lynx","MOSAIC","AOL","Opera","JAVA","MacWeb","WebExplorer","OmniWeb");
- $Agent = $GLOBALS["HTTP_USER_AGENT"];
- for ($i=0; $i<=7; $i++)
- {
- if (strpos($Agent,$Browsers[$i]))
- {
- $browser = $Browsers[$i];
- $browserver ="";
- }
- }
- if (ereg("Mozilla",$Agent) && !ereg("MSIE",$Agent))
- {
- $temp =explode("(", $Agent); $Part=$temp[0];
- $temp =explode("/", $Part); $browserver=$temp[1];
- $temp =explode(" ",$browserver); $browserver=$temp[0];
- $browserver =preg_replace("/([d.]+)/","1",$browserver);
- $browserver = " $browserver"; //OSPHP.COM.Cn开源
- $browser = "Netscape Navigator";
- }
- if (ereg("Mozilla",$Agent) && ereg("Opera",$Agent))
- {
- $temp =explode("(", $Agent); $Part=$temp[1]; //开源代码OSPhP.COm.CN
- $temp =explode(")", $Part); $browserver=$temp[1];
- $temp =explode(" ",$browserver);$browserver=$temp[2];
- $browserver =preg_replace("/([d.]+)/","1",$browserver);
- $browserver = " $browserver";
- $browser = "Opera";
- }
- if (ereg("Mozilla",$Agent) && ereg("MSIE",$Agent)) //OSPHP.com.CN
- {
- $temp = explode("(", $Agent); $Part=$temp[1];
- $temp = explode(";",$Part); $Part=$temp[1]; //OsPHP.COM.CN
- $temp = explode(" ",$Part);$browserver=$temp[2];
- $browserver =preg_replace("/([d.]+)/","1",$browserver);
- $browserver = " $browserver"; //OsPHP.COM.CN
- $browser = "Internet Explorer";
- }
- if ($browser!="")
- {
- $browseinfo = "$browser$browserver";
- }
- else
- {
- $browseinfo = "Unknown";
- }
- return $browseinfo;
- }
- //调用方法$browser=browseinfo() ;直接返回结果
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