您现在的位置是：首页 > 后端

当前栏目

收藏的PHP常用函数推荐收藏保存

PHP 函数收藏常用推荐保存

2023-06-13 09:14:16 时间

内容：
复制代码代码如下:

<?
functionGetIP(){//获取IP
if($_SERVER["HTTP_X_FORWARDED_FOR"])
$ip=$_SERVER["HTTP_X_FORWARDED_FOR"];
elseif($_SERVER["HTTP_CLIENT_IP"])
$ip=$_SERVER["HTTP_CLIENT_IP"];
elseif($_SERVER["REMOTE_ADDR"])
$ip=$_SERVER["REMOTE_ADDR"];
elseif(getenv("HTTP_X_FORWARDED_FOR"))
$ip=getenv("HTTP_X_FORWARDED_FOR");
elseif(getenv("HTTP_CLIENT_IP"))
$ip=getenv("HTTP_CLIENT_IP");
elseif(getenv("REMOTE_ADDR"))
$ip=getenv("REMOTE_ADDR");
else
$ip="Unknown";
return$ip;
}
?>

复制代码代码如下:

<?php
functionDateAdd($date,$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]=$int;
returndate("Y-m-d",mktime(0,0,0,$dateArr[1]+$value["m"],$dateArr[2]+$value["d"],$dateArr[0]+$value["y"]));
}
functionGetWeekDay($date){//计算出给出的日期是星期几
$dateArr=explode("-",$date);
returndate("w",mktime(0,0,0,$dateArr[1],$dateArr[2],$dateArr[0]));
}
?>

复制代码代码如下:
<?
functioncheck_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($dateArr[2])){
returncheckdate($dateArr[1],$dateArr[2],$dateArr[0]);
}
returnfalse;
}
functioncheck_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&&$timeArr[0]<=23)&&($timeArr[1]>=0&&$timeArr[1]<=59)&&($timeArr[2]>=0&&$timeArr[2]<=59))
returntrue;
else
returnfalse;
}
returnfalse;
}

复制代码代码如下:
functionDateDiff($date1,$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;
returnfalse;
}
?>

PHP重定向
复制代码代码如下:
<?
方法一：header("Location:index.php");
方法二：echo"<scrīpt>window.location="$PHP_SELF";</scrīpt>";
方法三：echo"<METAHTTP-EQUIV="Refresh"CONTENT="0;URL=index.php">";
?>

获取访问者浏览器
复制代码代码如下:
<?
functionbrowse_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";
$browser="NetscapeNavigator";
}
if(ereg("Mozilla",$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";
$browser="InternetExplorer";
}
if($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
复制代码代码如下:
<?
functionosinfo(){
$os="";
$Agent=$GLOBALS["HTTP_USER_AGENT"];
if(eregi("win",$Agent)&&strpos($Agent,"95")){
$os="Windows95";
}
elseif(eregi("win9x",$Agent)&&strpos($Agent,"4.90")){
$os="WindowsME";
}
elseif(eregi("win",$Agent)&&ereg("98",$Agent)){
$os="Windows98";
}
elseif(eregi("win",$Agent)&&eregi("nt5.0",$Agent)){
$os="Windows2000";
}
elseif(eregi("win",$Agent)&&eregi("nt",$Agent)){
$os="WindowsNT";
}
elseif(eregi("win",$Agent)&&eregi("nt5.1",$Agent)){
$os="WindowsXP";
}
elseif(eregi("win",$Agent)&&ereg("32",$Agent)){
$os="Windows32";
}
elseif(eregi("linux",$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)){
$os="IBMOS/2";
}
elseif(eregi("Mac",$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
复制代码代码如下:
<?
$mime_types=array(
"gif"=>"image/gif",
"jpg"=>"image/jpeg",
"jpeg"=>"image/jpeg",
"jpe"=>"image/jpeg",
"bmp"=>"image/bmp",
"png"=>"image/png",
"tif"=>"image/tiff",
"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",
"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
复制代码代码如下:
<?
header("Content-type:application/vnd.ms-excel");
header("Content-Disposition:filename=test.xls");
echo"test1t";
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。
方法一：
复制代码代码如下:
<?
//$db->rows[$i][date]中为数据库中datetime字段值.
$today=time();
$theDay=date("Y-m-dH:i:s",$today-24*3600);
$newTag=$db->rows[$i][date]>=$theDay?"<imgsrc="../image/newinfor.gif">":"";
//方法二：
$newTag=$db->rows[$i][date]>=date("Y-m-d00:00:00")?"<imgsrc="../image/newinfor.gif">":"";
?>

复制代码代码如下:
//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
<?
@extract($_SERVER,EXTR_SKIP);
@extract($_SESSION,EXTR_SKIP);
@extract($_POST,EXTR_SKIP);
@extract($_FILES,EXTR_SKIP);
@extract($_GET,EXTR_SKIP);
@extract($_ENV,EXTR_SKIP);
?>

复制代码代码如下:
//读取文件函数
<?
functionreadfromfile($file_name){
if(file_exists($file_name)){
$filenum=fopen($file_name,"r");
flock($filenum,LOCK_EX);
$file_data=fread($filenum,filesize($file_name));
rewind($filenum);
fclose($filenum);
return$file_data;
}
}
?>

复制代码代码如下:
//写入文件函数
<?
functionwritetofile($file_name,$data,$method="w"){
$filenum=fopen($file_name,$method);
flock($filenum,LOCK_EX);
$file_data=fwrite($filenum,$data);
fclose($filenum);
return$file_data;
}
?>

复制代码代码如下:
//页面快速转向
<?
functionturntopage($url="index.php",$info="页面转向中...",$second=2){
print"<html>n<head>n<title>页面转向中....</title>n";
print"<metahttp-equiv="refresh"content="$second;url=$url">n";
print"<styletype="text/css">nn</style>n";
print"</head>n<body>n";
print"<tablewidth="100%"border="0"align="center">n";
print"<tr>n";
print"<tdheight="200"></td>n";
print"</tr>n";
print"<tr>n";
print"<tdalign="center">n";
print"<tablewidth="60%"border="0"cellpadding="8"bgcolor="#AA9FFF">n";
print"<tr>n";
print"<tdheight="30"align="center">页面转向提示信息</td>n";
print"</tr>n";
print"<tr>n";
print"<tdalign="center">$info</td>n";
print"</tr>n";
print"<tr>n";
print"<tdalign="center">n";
print"<ahref="$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"<tdheight="200"></td>n";
print"</tr>n";
print"</table>n";
print"</body>n</html>";
exit;
?>

产生随机字符串函数
复制代码代码如下:
<?
functionrandom($length){
$hash=@#@#;
$chars=@#ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz@#;
$max=strlen($chars)-1;
mt_srand((double)microtime()*1000000);
for($i=0;$i<$length;$i++){
$hash.=$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）
复制代码代码如下:
<?
functionWordscut($string,$length,$sss=0){
if(strlen($string)>$length){
if($sss){
$length=$length-3;
$addstr=@#...@#;
}
for($i=0;$i<$length;$i++){
if(ord($string[$i])>127){
$wordscut.=$string[$i].$string[$i+1];
$i++;
}else{
$wordscut.=$string[$i];
}
}
return$wordscut.$addstr;
}
return$string;
}
?>

取得客户端IP地址
复制代码代码如下:
<?
functionGetIP(){
if(getenv("HTTP_CLIENT_IP")&&strcasecmp(getenv("HTTP_CLIENT_IP"),"unknown"))
$ip=getenv("HTTP_CLIENT_IP");
elseif(getenv("HTTP_X_FORWARDED_FOR")&&strcasecmp(getenv("HTTP_X_FORWARDED_FOR"),"unknown"))
$ip=getenv("HTTP_X_FORWARDED_FOR");
elseif(getenv("REMOTE_ADDR")&&strcasecmp(getenv("REMOTE_ADDR"),"unknown"))
$ip=getenv("REMOTE_ADDR");
elseif(isset($_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
复制代码代码如下:
<?
functioncheckEmail($inAddress)
{
return(ereg("^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+",$inAddress));
}
?>

分页（两个函数配合使用）
复制代码代码如下:
<?
functiongetpage($sql,$page_size=20)
{
global$page,$totalpage,$sums;//outparam
$page=$_GET["page"];
//$eachpage=$page_size;
$pagesql=strstr($sql,"from");
$pagesql="selectcount(*)asids".$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;
}
functionshowbar($string="")
{
global$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)
$out.="<ahref=@#?page=1&&".$string."@#title=第一页>第一页</a>";
if($start>1)
$out.="<ahref=@#?page=".$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)
$out.="<ahref=@#?page=".$nextend."&&".$string."@#title=下一页>>>..</a>";
if($page<>$totalpage)
$out.="<ahref=@#?page=".$totalpage."&&".$string."@#title=最后页>最后页</a>";
return$out;
}
?>

获取新插入数据的ID
复制代码代码如下:
<?
mysql_insert_id();
?>

复制代码代码如下:
//获得当前的脚本网址
<?
functionget_php_url(){
if(!empty($_server["REQUEST_URI"])){
$scriptName=$_SERVER["REQUEST_URI"];
$nowurl=$scriptName;
}else{
$scriptName=$_SERVER["PHP_SELF"];
if(empty($_SERVER["QUERY_STRING"]))$nowurl=$scriptName;
else$nowurl=$scriptName."?".$_SERVER["QUERY_STRING"];
}
return$nowurl;
}
?>

复制代码代码如下:
//把全角数字转为半角数字
<?
functionGetAlabNum($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;
}
?>

复制代码代码如下:
//去除HTML标记
<?
functionText2Html($txt){
$txt=str_replace("","　",$txt);
$txt=str_replace("<","<",$txt);
$txt=str_replace(">",">",$txt);
$txt=preg_replace("/[rn]{1,}/isU","
rn",$txt);
return$txt;
}
?>

复制代码代码如下:
//相对路径转化成绝对路径
<?
functionrelative_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;
}
?>

复制代码代码如下:
//取得所有链接
<?
functionget_all_url($code){
preg_match_all("/<as+href=["|"]?([^>""]+)["|"]?s*[^>]*>([^>]+)</a>/i",$code,$arr);
returnarray("name"=>$arr[2],"url"=>$arr[1]);
}
?>

复制代码代码如下:
//HTML表格的每行转为CSV格式数组
<?
functionget_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;
}
?>

复制代码代码如下:
//将HTML表格的每行每列转为数组，采集表格数据
<?
functionget_td_array($table){
$table=preg_replace(""<table[^>]*?>"si","",$table);
$table=preg_replace(""<tr[^>]*?>"si","",$table);
$table=preg_replace(""<td[^>]*?>"si","",$table);
$table=str_replace("</tr>","{tr}",$table);
$table=str_replace("</td>","{td}",$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($table);
foreach($tableas$key=>$tr){
$td=explode("{td}",$tr);
array_pop($td);
$td_array[]=$td;
}
return$td_array;
}
?>

复制代码代码如下:
//返回字符串中的所有单词$distinct=true去除重复
<?
functionsplit_en_str($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];
}
?>

复制代码代码如下:
//打印出为本PHP项目做出贡献的人员的清单
<?
stringphpcredits(void)
?>

猜你喜欢

柯洁评论AI下围棋：人类数千年全都是错的，新的风暴即将来袭
基于Redis的实体链接解决方案（基于redis的实体链接）
Linux之分支：种树丰富多彩（linux的分支）
“注释”生成“VitePress文档网站”只需要“一行命令”！来试试！
如何使用cmd在Mysql中进行验证（cmd怎么验证mysql）
25个字符不够长，以下为更具体的文章标题：Linux下创建文件的常用命令： touch vi nano 等（linux创建文件命令）
Science：DeepMind又一突破，AI玩转了西洋陆军棋，跻身历史top3
你一定听过这些破解有关雾霾的七个谣言
我的类为什么使用不了了？
Linux系统：挑战与收获（linux系统难学吗）
《青蛇》救不了暑期档
python进阶(20) 正则表达式的超详细使用[通俗易懂]
java 彻底删除文件_如何删除java文件「建议收藏」
2013年十大IT安全关键问题
精华文稿｜视觉自动驾驶最新技术路线浅析
xshell连接虚拟机使用的是什么连接模式_vmware无法连接到虚拟机
用Redis管理记录条数从查询到统计（redis记录条数查询）
学习cxoracle格式化你的数据（cx_oracle格式化）
Tapdata 与优炫数据库完成产品兼容性互认证
JetBrains首席语言设计师：我们将如何让Kotlin再活几十年
验证二叉树只有35%通过率？搞它
Linux加载光驱命令：一步步操作指南（linux加载光驱命令）
深入探索Oracle虚拟机：便捷访问全方位实践（访问虚拟机oracle）

zl程序教程

当前栏目

收藏的PHP常用函数推荐收藏保存

相关文章