收藏PHP常用自定义函数
发布:smiling 来源: PHP粉丝网 添加日期:2016-08-25 13:22:48 浏览: 评论:0
本文章为各位收藏PHP常用自定义函数了,这些函数是我们开发应用中常用到了,希望文章对各位会带来帮助.
- <?
- function GetIP() { //获取IP
- if ($_SERVER["HTTP_X_FORWARDED_FOR"])
- $ip = $_SERVER["HTTP_X_FORWARDED_FOR"]; //OSPHP.com.CN
- else if ($_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 $ip;
- }
- ?>
- <?php
- function DateAdd($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; //OSPHP.COm.CN
- 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])); //OsPHP.COM.CN
- }
- ?>
- <?
- 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])) { //开源代码OSPhP.COm.CN
- if (($timeArr[0] >= 0 && $timeArr[0] <= 23) && ($timeArr[1] >= 0 && $timeArr[1] <= 59) && ($timeArr[2] >= 0 && $timeArr[2] <= 59))
- return true;
- else
- return false;
- }
- return false;
- }
- function DateDiff($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) / $dividend;
- return false;
- }
- ?>
PHP重定向
- <?
- 方法一:header("Location: index.php");
- 方法二:echo "<scrīpt>window.location ="$PHP_SELF";</scrīpt>"; //PHP开源代码
- 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]; //开源代码OSPhP.COm.CN
- $temp =explode(" ",$browserver); $browserver=$temp[0];
- $browserver =preg_replace("/([d.]+)/","1",$browserver);
- $browserver = " $browserver"; //oSPHP.COM.CN
- $browser = "Netscape Navigator";
- }
- if (ereg("Mozilla",$Agent) && ereg("Opera",$Agent))
- {
- $temp =explode("(", $Agent); $Part=$temp[1]; //OSPHP.COM.Cn开源
- $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"; //OSPHP.COM.Cn开源
- $browser = "Internet Explorer";
- } //phpfensi.com
- if ($browser!="")
- {
- $browseinfo = "$browser$browserver";
- }
- else
- {
- $browseinfo = "Unknown";
- }
- return $browseinfo;
- }
- //调用方法$browser=browseinfo() ;直接返回结果
- ?>
获取访问者操作系统
- <?
- function osinfo() {
- $os="";
- $Agent = $GLOBALS["HTTP_USER_AGENT"];
- if (eregi('win',$Agent) && strpos($Agent, '95')) { //开源OSPhP.COM.CN
- $os="Windows 95";
- }
- elseif (eregi('win 9x',$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)) { //PHP开源代码
- $os="Windows 32";
- }
- elseif (eregi('linux',$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() ;
- ?>
文件格式类
- <?
- $mime_types = array(
- 'gif' => 'image/gif',
- 'jpg' => 'image/jpeg',
- 'jpeg' => 'image/jpeg',
- 'jpe' => 'image/jpeg',
- 'bmp' => 'image/bmp',
- 'png' => 'image/png',
- 'tif' => 'image/tiff', //OSPHP.COm.CN
- 'tiff' => 'image/tiff',
- 'pict' => 'image/x-pict',
- 'pic' => 'image/x-pict',
- 'pct' => 'image/x-pict',
- 'tif' => 'image/tiff',
- 'tiff' => 'image/tiff',
- 'psd' => 'image/x-photoshop',
- 'swf' => 'application/x-shockwave-flash',
- 'js' => 'application/x-javascrīpt',
- 'pdf' => 'application/pdf',
- 'ps' => 'application/postscrīpt',
- 'eps' => 'application/postscrīpt',
- 'ai' => 'application/postscrīpt',
- 'wmf' => 'application/x-msmetafile',
- 'css' => 'text/css',
- 'htm' => 'text/html',
- 'html' => 'text/html',
- 'txt' => 'text/plain',
- 'xml' => 'text/xml',
- 'wml' => 'text/wml',
- 'wbmp' => 'image/vnd.wap.wbmp',
- 'mid' => 'audio/midi',
- 'wav' => 'audio/wav',
- 'mp3' => 'audio/mpeg',
- 'mp2' => 'audio/mpeg',
- 'avi' => 'video/x-msvideo',
- 'mpeg' => 'video/mpeg',
- 'mpg' => 'video/mpeg',
- 'qt' => 'video/quicktime',
- 'mov' => 'video/quicktime',
- 'lha' => 'application/x-lha',
- 'lzh' => 'application/x-lha',
- 'z' => 'application/x-compress',
- 'gtar' => 'application/x-gtar',
- 'gz' => 'application/x-gzip',
- 'gzip' => 'application/x-gzip',
- 'tgz' => 'application/x-gzip',
- 'tar' => 'application/x-tar',
- 'bz2' => 'application/bzip2',
- 'zip' => 'application/zip',
- 'arj' => 'application/x-arj',
- 'rar' => 'application/x-rar-compressed',
- 'hqx' => 'application/mac-binhex40',
- 'sit' => 'application/x-stuffit',
- 'bin' => 'application/x-macbinary',
- 'uu' => 'text/x-uuencode',
- 'uue' => 'text/x-uuencode',
- 'latex'=> 'application/x-latex',
- 'ltx' => 'application/x-latex',
- 'tcl' => 'application/x-tcl',
- 'pgp' => 'application/pgp',
- 'asc' => 'application/pgp',
- 'exe' => 'application/x-msdownload',
- 'doc' => 'application/msword', //开源OSPhP.COM.CN
- 'rtf' => 'application/rtf',
- 'xls' => 'application/vnd.ms-excel',
- 'ppt' => 'application/vnd.ms-powerpoint',
- 'mdb' => 'application/x-msaccess',
- 'wri' => 'application/x-mswrite',
- );
- ?>
php生成excel文档
- <?
- header("Content-type:application/vnd.ms-excel");
- header("Content-Disposition:filename=test.xls");
- echo "test1t"; //phpfensi.com
- echo "test2tn";
- echo "test1t";
- echo "test2tn";
- echo "test1t";
- echo "test2tn";
- echo "test1t";
- echo "test2tn";
- echo "test1t";
- echo "test2tn";
- echo "test1t";
- echo "test2tn";
- //改动相应文件头就可以输出.doc .xls等文件格式了
- ?>
时间比较问题
举一个简单例子说明:比如一个论坛对当天发表的贴子用new图片标记一下。 //开源OSPhP.COM.CN
方法一:
- <?
- //$db->rows[$i][date]中为数据库中datetime字段值.
- $today=time();
- $theDay=date("Y-m-d H:i:s",$today-24*3600);
- $newTag=$db->rows[$i][date]>=$theDay?"<img src='../image/newinfor.gif'>":""; //OSPHP.com.CN
- //方法二:
- $newTag=$db->rows[$i][date]>=date("Y-m-d 00:00:00")?"<img src='../image/newinfor.gif'>":"";
- ?>
- //提取页面和浏览器提交的变量,作用相当于使PHP.INI开了全局变量 //OSPHP.COm.CN
- <?
- @extract($_SERVER, EXTR_SKIP);
- @extract($_SESSION, EXTR_SKIP);
- @extract($_POST, EXTR_SKIP);
- @extract($_FILES, EXTR_SKIP);
- @extract($_GET, EXTR_SKIP);
- @extract($_ENV, EXTR_SKIP);
- ?>
- //读取文件函数
- <?
- function readfromfile($file_name) {
- if (file_exists($file_name)) {
- $filenum=fopen($file_name,"r");
- flock($filenum,LOCK_EX);
- $file_data=fread($filenum, filesize($file_name));
- rewind($filenum); //oSPHP.COM.CN
- fclose($filenum);
- return $file_data;
- }
- }
- ?>
- //写入文件函数
- <?
- function writetofile($file_name,$data,$method="w") {
- $filenum=fopen($file_name,$method);
- flock($filenum,LOCK_EX);
- $file_data=fwrite($filenum,$data);
- fclose($filenum);
- return $file_data;
- }
- ?>
- //开源代码OSPhP.COm.CN
- //页面快速转向
- <?
- function turntopage($url="index.php",$info = "页面转向中...",$second=2){
- print "<html>n<head>n<title>页面转向中....</title>n";
- print "<meta http-equiv="refresh" content="$second;url=$url">n";
- print "<style type="text/css">n<!--n";
- print "td { font-family: "Verdana", "Arial";font-size: 12px}n";
- print "A {COLOR: #000000; TEXT-DECORATION: none}n";
- print "-->n</style>n";
- print "</head>n<body>n";
- print "<table width="100%" border="0" align="center">n";
- print " <tr>n";
- print " <td height="200"> </td>n";
- print " </tr>n";
- print " <tr>n";
- print " <td align="center">n";
- print " <table width="60%" border="0" cellpadding="8" bgcolor="#AA9FFF">n"; //OSPHP.COm.CN
- print " <tr>n";
- print " <td height="30" align="center">页面转向提示信息</td>n";
- print " </tr>n";
- print " <tr>n";
- print " <td align="center">$info</td>n";
- print " </tr>n"; //OsPHP.COM.CN
- print " <tr>n";
- print " <td align="center">n";
- print " <a href="$url">如果你的浏览器不支持自动跳转,请按这里</a></td>n";
- print " </tr>n";
- print " </tr>n";
- print " </table></td>n";
- print " </tr>n";
- print " <tr>n";
- print " <td height="200"> </td>n";
- print " </tr>n";
- print "</table>n";
- print "</body>n</html>";
- exit;
- ?>
产生随机字符串函数
- <?
- function random($length) {
- $hash = @#@#;
- $chars = @#ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz@#;
- $max = strlen($chars) - 1;
- mt_srand((double)microtime() * 1000000);
- for($i = 0; $i < $length; $i++) { //PHP开源代码
- $hash .= $chars[mt_rand(0, $max)];
- }
- return $hash;
- }
- ?>
截取一定长度的字符串(该函数对GB2312使用有效)
- <?
- function Wordscut($string, $length ,$sss=0) {
- if(strlen($string) > $length) {
- if($sss){
- $length=$length - 3;
- $addstr=@# ...@#; //开源代码OSPhP.COm.CN
- }
- for($i = 0; $i < $length; $i++) {
- if(ord($string[$i]) > 127) {
- $wordscut .= $string[$i].$string[$i + 1]; //oSPHP.COM.CN
- $i++;
- } else {
- $wordscut .= $string[$i];
- }
- }
- return $wordscut.$addstr;
- }
- return $string;
- }
- ?>
取得客户端IP地址
- <?
- function GetIP(){
- if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
- $ip = getenv("HTTP_CLIENT_IP");
- else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
- $ip = getenv("HTTP_X_FORWARDED_FOR"); //oSPHP.COM.CN
- else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
- $ip = getenv("REMOTE_ADDR");
- else if (isset($_SERVER[@#REMOTE_ADDR@#]) && $_SERVER[@#REMOTE_ADDR@#] && strcasecmp($_SERVER[@#REMOTE_ADDR@#], "unknown"))
- $ip = $_SERVER[@#REMOTE_ADDR@#];
- else
- $ip = "unknown";
- return($ip);
- }
- ?>
判断邮箱地址
- <?
- function checkEmail($inAddress)
- {
- return (ereg("^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+",$inAddress));
- }
- ?>
分页(两个函数配合使用)
- <?
- function getpage($sql,$page_size=20)
- {
- global $page,$totalpage,$sums; //out param
- $page = $_GET["page"];
- //$eachpage = $page_size;
- $pagesql = strstr($sql," from ");
- $pagesql = "select count(*) as ids ".$pagesql;
- $result = mysql_query($pagesql);
- if($rs = mysql_fetch_array($result)) $sums = $rs[0];
- $totalpage = ceil($sums/$page_size);
- if((!$page)($page<1)) $page=1;
- $startpos = ($page-1)*$page_size;
- $sql .=" limit $startpos,$page_size ";
- return $sql;
- }
- function showbar($string="")
- {
- global $page,$totalpage;
- $out="共<font ".$totalpage."color=@#red@#><b>".$totalpage."</b></font>页 ";
- $linkNum =4;
- $start = ($page-round($linkNum/2))>0 ? ($page-round($linkNum/2)) : "1";
- $end = ($page+round($linkNum/2))<$totalpage ? ($page+round($linkNum/2)) : $totalpage;
- $prestart=$start-1;
- $nextend=$end+1;
- if($page<>1)
- $out .= "<a href=@#?page=1&&".$string."@#title=第一页>第一页</a> ";
- if($start>1)
- $out.="<a href=@#?page=".$prestart."@# title=上一页>..<<</a> ";
- for($t=$start;$t<=$end;$t++)
- {
- $out .= ($page==$t) ? "<font [".$t."]color=@#red@#><b>[".$t."]</b></font> " : "<a $thref=@#?page=$t&&".$string."@#>$t</a> ";
- }
- if($end<$totalpage)
- $out.="<a href=@#?page=".$nextend."&&".$string."@# title=下一页>>>..</a>";
- if($page<>$totalpage)
- $out .= " <a href=@#?page=".$totalpage."&&".$string."@# title=最后页>最后页</a>"; //开源OSPhP.COM.CN
- return $out;
- }
- ?>
获取新插入数据的ID
- <?
- mysql_insert_id();
- ?>
- //获得当前的脚本网址
- <?
- function get_php_url(){
- if(!emptyempty($_server["REQUEST_URI"])){
- $scriptName = $_SERVER["REQUEST_URI"];
- $nowurl = $scriptName;
- }else{
- $scriptName = $_SERVER["PHP_SELF"];
- if(emptyempty($_SERVER["QUERY_STRING"])) $nowurl = $scriptName;
- else $nowurl = $scriptName."?".$_SERVER["QUERY_STRING"];
- }
- return $nowurl;
- }
- ?>
- //把全角数字转为半角数字
- <?
- function GetAlabNum($fnum){
- $nums = array("0","1","2","3","4","5","6","7","8","9");
- $fnums = "0123456789";
- for($i=0;$i<=9;$i++) $fnum = str_replace($nums[$i],$fnums[$i],$fnum);
- $fnum = ereg_replace("[^0-9.]|^0{1,}","",$fnum);
- if($fnum=="") $fnum=0;
- return $fnum;
- }
- ?>
- //去除HTML标记
- <?
- function Text2Html($txt){
- $txt = str_replace(" "," ",$txt);
- $txt = str_replace("<","<",$txt);
- $txt = str_replace(">",">",$txt);
- $txt = preg_replace("/[rn]{1,}/isU","
- rn",$txt);
- return $txt;
- }
- ?>
- //相对路径转化成绝对路径
- <?
- function relative_to_absolute($content, $feed_url) {
- preg_match('/(http|https|ftp):///', $feed_url, $protocol);
- $server_url = preg_replace("/(http|https|ftp|news):///", "", $feed_url);
- $server_url = preg_replace("//.*/", "", $server_url);
- if ($server_url == '') {
- return $content;
- }
- if (isset($protocol[0])) {
- $new_content = preg_replace('/href="//', 'href="'.$protocol[0].$server_url.'/', $content);
- $new_content = preg_replace('/src="//', 'src="'.$protocol[0].$server_url.'/', $new_content);
- } else {
- $new_content = $content;
- }
- return $new_content;
- }
- ?>
- //取得所有链接
- <?
- function get_all_url($code){
- preg_match_all('/<as+href=["|']?([^>"' ]+)["|']?s*[^>]*>([^>]+)</a>/i',$code,$arr); //OsPHP.COM.CN
- return array('name'=>$arr[2],'url'=>$arr[1]);
- }
- ?>
- //HTML表格的每行转为CSV格式数组
- <?
- function get_tr_array($table) {
- $table = preg_replace("'<td[^>]*?>'si",'"',$table);
- $table = str_replace("</td>",'",',$table);
- $table = str_replace("</tr>","{tr}",$table);
- //去掉 HTML 标记
- $table = preg_replace("'<[/!]*?[^<>]*?>'si","",$table);
- //去掉空白字符
- $table = preg_replace("'([rn])[s]+'","",$table);
- $table = str_replace(" ","",$table);
- $table = str_replace(" ","",$table);
- $table = explode(",{tr}",$table);
- array_pop($table);
- return $table;
- }
- ?>
- //将HTML表格的每行每列转为数组,采集表格数据
- <?
- function get_td_array($table) {
- $table = preg_replace("'<table[^>]*?>'si","",$table); //开源代码OSPhP.COm.CN
- $table = preg_replace("'<tr[^>]*?>'si","",$table);
- $table = preg_replace("'<td[^>]*?>'si","",$table);
- $table = str_replace("</tr>","{tr}",$table); //开源代码OSPHP.COM.Cn
- $table = str_replace("</td>","{td}",$table);
- //去掉 HTML 标记
- $table = preg_replace("'<[/!]*?[^<>]*?>'si","",$table);
- //去掉空白字符
- $table = preg_replace("'([rn])[s]+'","",$table);
- $table = str_replace(" ","",$table);
- $table = str_replace(" ","",$table);
- $table = explode('{tr}', $table);
- array_pop($table); //OSPHP.COM.Cn开源
- foreach ($table as $key=>$tr) {
- $td = explode('{td}', $tr);
- array_pop($td);
- $td_array[] = $td;
- }
- return $td_array;
- }
- ?>
- //返回字符串中的所有单词 $distinct=true 去除重复
- <?
- function split_en_str($str,$distinct=true) {
- preg_match_all('/([a-zA-Z]+)/',$str,$match);
- if ($distinct == true) {
- $match[1] = array_unique($match[1]);
- }
- sort($match[1]);
- return $match[1];
- }
- ?>
- //打印出为本PHP项目做出贡献的人员的清单
- <?
- string phpcredits(void)
- ?>
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