复制代码 代码如下:
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))
$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] + $value['y']));
}
function getweekday($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]));
}
复制代码 代码如下:
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
$timearr = explode(:, $time);
if (is_numeric($timearr[0]) && is_numeric($timearr[1]) && is_numeric($timearr[2])) {
if (($timearr[0] >= 0 && $timearr[0] = 0 && $timearr[1] = 0 && $timearr[2] return true;
else
return false;
}
return false;
}
function datediff($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;
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) / $dividend;
return false;
}
复制代码 代码如下:
function get_innerhtml($html,$label) { //获取一对html标记间的html字符串
$result_arr = preg_split(//i,$html);
$pattern = //i;
for ($i = 0; $i list($left, $right) = preg_split($pattern,$result_arr[$i],2);
$result_arr[$i] = $right;
}
return $result_arr;
}
//例: echo get_innerhtml(something
, td); //will print something.
function get_input_value($input) { //获取input的html代码中的value值
$pos = stripos($input, value=) + 6;
if ($pos !== false) {
$input = substr($input, $pos);
if (substr($input, 0, 1) == \)
return substr($input, 1, strpos($input, \, 1) - 1);
else
return substr($input, 0, strpos($input, ) - 1);
}
return false;
}
function getcontentbetween($a, $b, $str) { //获取字符串$str中,字符串$a与字符串$b之间的字符串
if ($str!== && $a!== && $b!==) {
$start = strpos($str, $a) + strlen($a);
return substr($str, $start, strpos($str, $b, $start + 1) - $start);
}
return false;
}
1、关于php重定向
复制代码 代码如下:
方法一：header(location: index.php);
方法二：echo window.location =$php_self;īpt>;
方法三：echo ;
2、获取访问者浏览器
复制代码 代码如下:
function browse_infor()
{
$browser=;$browserver=;
$browsers =array(lynx,mosaic,aol,opera,java,macweb,webexplorer,omniweb);
$agent = $globals[http_user_agent];
for ($i=0; $i{
if (strpos($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;
$browser = netscape navigator;
}
if (ereg(mozilla,$agent) && ereg(opera,$agent))
{
$temp =explode((, $agent); $part=$temp[1];
$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))
{
$temp = explode((, $agent); $part=$temp[1];
$temp = explode(;,$part); $part=$temp[1];
$temp = explode( ,$part);$browserver=$temp[2];
$browserver =preg_replace(/([d.]+)/,1,$browserver);
$browserver = $browserver;
$browser = internet explorer;
}
if ($browser!=)
{
$browseinfo = $browser$browserver;
}
else
{
$browseinfo = unknown;
}
return $browseinfo;
}
//调用方法$browser=browseinfo() ;直接返回结果
3、获取访问者操作系统
复制代码 代码如下:
function osinfo() {
$os=;
$agent = $globals[http_user_agent];
if (eregi('win',$agent) && strpos($agent, '95')) {
$os=windows 95;
}
elseif (eregi('win 9x',$agent) && strpos($agent, '4.90')) {
$os=windows me;
}
elseif (eregi('win',$agent) && ereg('98',$agent)) {
$os=windows 98;
}
elseif (eregi('win',$agent) && eregi('nt 5.0',$agent)) {
$os=windows 2000;
}
elseif (eregi('win',$agent) && eregi('nt',$agent)) {
$os=windows nt;
}
elseif (eregi('win',$agent) && eregi('nt 5.1',$agent)) {
$os=windows xp;
}
elseif (eregi('win',$agent) && ereg('32',$agent)) {
$os=windows 32;
}
elseif (eregi('linux',$agent)) {
$os=linux;
}
elseif (eregi('unix',$agent)) {
$os=unix;
}
elseif (eregi('sun',$agent) && eregi('os',$agent)) {
$os=sunos;
}
elseif (eregi('ibm',$agent) && eregi('os',$agent)) {
$os=ibm os/2;
}
elseif (eregi('mac',$agent) && eregi('pc',$agent)) {
$os=macintosh;
}
elseif (eregi('powerpc',$agent)) {
$os=powerpc;
}
elseif (eregi('aix',$agent)) {
$os=aix;
}
elseif (eregi('hpux',$agent)) {
$os=hpux;
}
elseif (eregi('netbsd',$agent)) {
$os=netbsd;
}
elseif (eregi('bsd',$agent)) {
$os=bsd;
}
elseif (ereg('osf1',$agent)) {
$os=osf1;
}
elseif (ereg('irix',$agent)) {
$os=irix;
}
elseif (eregi('freebsd',$agent)) {
$os=freebsd;
}
if ($os=='') $os = unknown;
return $os;
}
//调用方法$os=os_infor() ;
http://www.bkjia.com/phpjc/318394.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/318394.htmltecharticle最新打算学习php,发现好多函数需要用到，可自己写又麻烦，于是找了下php的常用函数，从各大php系统中弄下来的，绝对是使用的php实用函数...