最近研究PHP,收藏一下。 出处:php源码网-开源程序大全(Open Source) 内容: 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 $ip; } ?> 详细出处参考:http://www.jb51.net/article/22199.htm function DateAdd($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])); } ?> 详细出处参考:http://www.jb51.net/article/22199.htm 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 && $timeArr[0] <= 23) && ($timeArr[1] >= 0 && $timeArr[1] <= 59) && ($timeArr[2] >= 0 && $timeArr[2] <= 59)) return true; else return false; } return false; } 详细出处参考:http://www.jb51.net/article/22199.htm function DateDiff($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) / $dividend; return false; } ?> 详细出处参考:http://www.jb51.net/article/22199.htm 方法一:header("Location: index.php"); 方法二:echo "window.location ="$PHP_SELF"; "; 方法三:echo " "; ?> 详细出处参考:http://www.jb51.net/article/22199.htm 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"; "; 方法三:echo " "; ?> 获取访问者浏览器 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<=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"; $browser = "Netscape Navigator"; } if (ereg("Mozilla",$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 ?> 详细出处参考:http://www.jb51.net/article/22199.htm 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() ; ?> 详细出处参考:http://www.jb51.net/article/22199.htm 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', ); ?> 详细出处参考:http://www.jb51.net/article/22199.htm 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 ?> 详细出处参考:http://www.jb51.net/article/22199.htm 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(); $theDay=date("Y-m-d H:i:s",$today-24*3600); $newTag=$db->rows[$i][date]>=$theDay?" ":""; //方法二: $newTag=$db->rows[$i][date]>=date("Y-m-d 00:00:00")?" ":""; ?> 复制代码 代码如下: //提取页面和浏览器提交的变量,作用相当于使PHP.INI开了全局变量 @extract($_SERVER, EXTR_SKIP); @extract($_SESSION, EXTR_SKIP); @extract($_POST, EXTR_SKIP); @extract($_FILES, EXTR_SKIP); @extract($_GET, EXTR_SKIP); @extract($_ENV, EXTR_SKIP); ?> 复制代码 代码如下: //读取文件函数 function readfromfile($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); fclose($filenum); return $file_data; } } ?> 复制代码 代码如下: //写入文件函数 function writetofile($file_name,$data,$method="w") { $filenum=fopen($file_name,$method); flock($filenum,LOCK_EX); $file_data=fwrite($filenum,$data); fclose($filenum); return $file_data; } ?> 复制代码 代码如下: //页面快速转向 function turntopage($url="index.php",$info = "页面转向中...",$second=2){ print "n
n
页面转向中.... n";
print "
n";
print "n";
print "nn";
print "
n"; print " n"; print " n"; print " n"; print " n"; print " n"; print " n"; print " n"; print " 页面转向提示信息 n"; print " n"; print " n"; print " $info n"; print " n"; print " n"; print " n"; print " 如果你的浏览器不支持自动跳转,请按这里 n"; print " n"; print " n"; print "
n"; print " n"; print " n"; print " n"; print " n"; print "
n";
print "n";
exit;
?>
产生随机字符串函数
复制代码 代码如下:
function random($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 $hash;
}
?>
截取一定长度的字符串(该函数对GB2312使用有效)
复制代码 代码如下:
function Wordscut($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
代码如下:
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");
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
代码如下:
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)
代码如下:
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;
$out="共
".$totalpage." 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)
$out .= "
第一页 ";
if($start>1)
$out.="
..<< ";
for($t=$start;$t<=$end;$t++)
{
$out .= ($page==$t) ? "
[".$t."] " : "
$t ";
}
if($end<$totalpage)
$out.="
>>.. ";
if($page<>$totalpage)
$out .= "
最后页 ";
return $out;
}
?>
获取新插入数据的ID
复制代码 代码如下:
mysql_insert_id();
?>
代码如下:
//获得当前的脚本网址
function get_php_url(){
if(!empty($_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 $nowurl;
}
?>
代码如下:
//把全角数字转为半角数字
function GetAlabNum($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 $fnum;
}
?>
代码如下:
//去除HTML标记
function Text2Html($txt){
$txt = str_replace(" "," ",$txt);
$txt = str_replace("<","<",$txt);
$txt = str_replace(">",">",$txt);
$txt = preg_replace("/[rn]{1,}/isU","
rn",$txt);
return $txt;
}
?>
代码如下:
//相对路径转化成绝对路径
function relative_to_absolute($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 $new_content;
}
?>
复制代码 代码如下:
//取得所有链接
function get_all_url($code){
preg_match_all('/
"' ]+)["|']?s*[^>]*>([^>]+)/i',$code,$arr); return array('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 function get_tr_array($table) { $table = preg_replace("']*?>'si",'"',$table); $table = str_replace(" ",'",',$table); $table = str_replace("","{tr}",$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 $table; } ?> 复制代码 代码如下: //将HTML表格的每行每列转为数组,采集表格数据 function get_td_array($table) { $table = preg_replace("']*?>'si","",$table); $table = preg_replace("']*?>'si","",$table); $table = preg_replace("']*?>'si","",$table); $table = str_replace(" ","{tr}",$table); $table = str_replace("","{td}",$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 ($table as $key=>$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 $distinct=true 去除重复 function split_en_str($str,$distinct=true) { preg_match_all('/([a-zA-Z]+)/',$str,$match); if ($distinct == true) { $match[1] = array_unique($match[1]); } sort($match[1]); return $match[1]; } ?> 复制代码 代码如下: //打印出为本PHP项目做出贡献的人员的清单 string phpcredits(void) ?> //获得当前的脚本网址 function get_php_url(){ if(!empty($_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 $nowurl; } //把全角数字转为半角数字 function GetAlabNum($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); $txt = preg_replace("/[\r\n]{1,}/isU"," \r\n",$txt); return $txt; } //清除HTML标记 function ClearHtml($str){ $str = str_replace('<','<',$str); $str = str_replace('>','>',$str); return $str; } //相对路径转化成绝对路径 function relative_to_absolute($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('/"\' ]+)["|\']?\s*[^>]*>([^>]+)<\/a>/i',$code,$arr); return array('name'=>$arr[2],'url'=>$arr[1]); } //获取指定标记中的内容 function get_tag_data($str, $start, $end){ if ( $start == '' || $end == '' ){ return; } $str = explode($start, $str); $str = explode($end, $str[1]); return $str[0]; } //HTML表格的每行转为CSV格式数组 function get_tr_array($table) { $table = preg_replace("' ]*?>'si",'"',$table); $table = str_replace(" ",'",',$table); $table = str_replace("","{tr}",$table); //去掉 HTML 标记 $table = preg_replace("'<[\/\!]*?[^<>]*?>'si","",$table); //去掉空白字符 $table = preg_replace("'([\r\n])[\s]+'","",$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) { $table = preg_replace("']*?>'si","",$table); $table = preg_replace("']*?>'si","",$table); $table = preg_replace("']*?>'si","",$table); $table = str_replace(" ","{tr}",$table); $table = str_replace("","{td}",$table); //去掉 HTML 标记 $table = preg_replace("'<[\/\!]*?[^<>]*?>'si","",$table); //去掉空白字符 $table = preg_replace("'([\r\n])[\s]+'","",$table); $table = str_replace(" ","",$table); $table = str_replace(" ","",$table); $table = explode('{tr}', $table); array_pop($table); 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 $match[1]; } //文件读取函式 function PHP_Read($file_name) { $fd=fopen($file_name,r); while($bufline=fgets($fd, 4096)){ $buf.=$bufline; } fclose($fd); return $buf; } ?> 文件写入函式 //文件写入函式 function PHP_Write($file_name,$data,$method="w") { $filenum=@fopen($file_name,$method); flock($filenum,LOCK_EX); $file_data=fwrite($filenum,$data); fclose($filenum); return $file_data; } ?> 静态页面生成函式 //静态页面生成函式 function phptohtm($filefrom,$fileto,$u2u=1){ if($u2u==1){ $data=PHP_Read($filefrom); }else{ $data=$filefrom; } PHP_Write($fileto,$data); return true; } ?> 指定条件信息数量检索函式 //指定条件信息数量检索函式 function rec_exist($table,$where){ $query="select count(*) as num from $table ".$where; $result=mysql_query($query) or die(nerror(1)); $rowcount=mysql_fetch_array($result); $num=$rowcount["num"]; if ($num==0){ return false; } return $num; } ?> 目录删除函式 //目录删除函式 function del_DIR($directory){ $mydir=dir($directory); while($file=$mydir->read()){ if((is_dir("$directory/$file")) AND ($file!=".") AND ($file!="..")){ del_DIR("$directory/$file"); }else{ if(($file!=".") AND ($file!="..")){ unlink("$directory/$file"); //echo "unlink $directory/$file ok "; } } } $mydir->close(); rmdir($directory); //echo "rmdir $directory ok "; } ?> 目录名称合法性检测函式 //目录名称合法性检测 function isen($str){ $ret=""; for($i=0;$i $p=ord(substr($str,$i,1)); if(($p<48 & $p!=45 & $p!=46) || ($p>57 & $p<65) || ($p>90 & $p<97 & $p!=95) || $p>122){ nerror("不符合规范!"); } $ret.=chr($p); } return $ret; } ?> 分页函式 //分页函式 function splitlist($HALT,$LRLIST,$ECHOCNT,$paper,$table,$where,$page_id,$userid){ global $splitstr,$sumcnt; if($paper=="" || $sumcnt==""){ $query = "select count(*) as num from $table $where"; $result = mysql_query($query); $row = mysql_fetch_array($result); $sumcnt=$row["num"]; if($sumcnt==0){ nerror("该版内还没有选择发布新闻 !"); } $paper=1; } $sumpaper=($sumcnt-$sumcnt%$ECHOCNT)/$ECHOCNT; if(($sumcnt%$ECHOCNT)!=0) $sumpaper+=1; if($sumpaper==1 && $HALT==0) return($where); $enwhere=base64_encode(base64_encode($where)); if(($LRLIST*2+1) < $sumpaper){ if(($paper-$LRLIST) < 2){ $tract=1; $sub=$LRLIST*2+1; }else if(($paper+$LRLIST) >= $sumpaper){ $tract=$sumpaper-($LRLIST*2); $sub=$sumpaper; }else{ $tract=$paper-$LRLIST; $sub=$paper+$LRLIST; } }else{ $tract=1; $sub=$sumpaper; } $uppaper=$paper-1; $downpaper=$paper+1; $startcnt=($paper-1)*$ECHOCNT; $where.=" limit ${ startcnt },${ ECHOCNT }"; if($tract > 1) { $splitstr="【 << "; } else $splitstr="【 << "; for($i=$tract;$i<=$sub;$i++){ if ($i!=$paper) $splitstr.="".$i." "; else $splitstr.="".$i." "; } if ($sub!=$sumpaper) $splitstr.=">> 】"; else $splitstr.=">> 】"; return($where); } ?> 关于分页函式的使用说明 /* #### 检索分页函式 #### Int $HALT - 检索结果仅分1页时是否(1/0)显示页码条 Int $LRLIST - (页码条显示页码数-1)/2 Int $ECHOCNT - 检索时每页显示记录的数量 Int $paper - 页数,预提取:$paper=$HTTP_GET_VARS[paper]; Varchar $table - 数据表名,预附值:$table="db.table"; Varchar $where - 检索条件,预附值:$where="where field='value'"; Varchar $enwhere - 将原$where进行两次base64_encode()编码后以GET的方式提交 Varchar $splitstr - 页码条输出字串,执行函式后在相应的位置执行 echo $splitstr; 函式调用前需获取变量 - $paper=$HTTP_GET_VARS[paper]; $sumcnt=$HTTP_GET_VARS[sumcnt]; $enwhere=$HTTP_GET_VARS[enwhere]; Return (Varchar $where) - 分页后检索语句的检索条件 注意:本函式需调用出错处理函式 nerror($error); */ 图片文件上传函式 //图片文件上传函式 function upload_img($UploadFile,$UploadFile_name,$UploadFile_size,$UploadPath,$max_size=64){ //$TimeLimit=60; //设置超时限制时间 缺省时间为 30秒 设置为0时为不限时 //set_time_limit($TimeLimit); if(($UploadFile!= "none" )&&($UploadFile != "" )){ $FileName=$UploadPath.$UploadFile_name; if($UploadFile_size <1024){ $FileSize="(string)$UploadFile_size" . "字节"; }elseif($UploadFile_size <(1024 * $max_size)){ $FileSize=number_format((double)($UploadFile_size / 1024), 1) . " KB"; }else{ nerror("文件超过限制大小!"); } //{ //$FileSize="number_format((double)($UploadFile_size" / (1024 * 1024)), 1) . " MB"; // } if(!file_exists($FileName)){ if(copy($UploadFile,$FileName)){ return "$UploadFile_name ($FileSize)"; }else{ nerror("文件 $UploadFile_name 上载失败!"); } unlink($UploadFile); }else{ nerror("文件 $UploadFile_name 已经存在!"); } //set_time_limit(30); //恢复缺省超时设置 } } 如何判断ip地址合法性 if(!strcmp(long2ip(sprintf("%u",ip2long($ip))),$ip)) echo "is ipn"; ---- email的正则判断 eregi("^[_.0-9a-zA-Z-]+@([0-9a-zA-Z][0-9a-zA-Z_-]+.)+[a-zA-Z]$", $email); 检测ip地址和mask是否合法的例子 $ip = '192.168.0.84'; $mask = '255.255.255.0'; $network = '192.168.0'; $ip = ip2long($ip); $mask = ip2long($mask); $network = ip2long($network); if( ($ip & $mask) == $network) echo "valid ip and maskn"; ?> ---- 文件下载头部输出如何设定 header("Content-type: application/x-download"); header("Content-Disposition: attachment; filename=$file_download_name;"); header("Accept-Ranges: bytes"); header("Content-Length: $download_size"); echo 'xxx' 用header输出ftp下载方式,并且支持断点续传 一个例子: header('Pragma: public'); header('Cache-Control: private'); header('Cache-Control: no-cache, must-revalidate'); header('Accept-Ranges: bytes'); header('Connection: close'); header("Content-Type: audio/mpeg"); header("Location:ftp://download:1bk3l4s3k9s2@232.2.22.22/2222/web技术开发知识库/cn_web.rmvb"); 正则匹配中文 ereg("^[".chr(0xa1)."-".chr(0xff)."]+$", $str); 批量替换文本里面的超级链接 function urlParse($str = ''){ if ('' == $str) return $str; $types = array("http", "ftp", "https"); $replace = << ''.htmlentities('\1').htmlentities('\2').' ' EOPHP; $ret = $str; while(list(,$type) = each($types)){ $ret = preg_replace("|($type://)([^\s]*)|ie ", $replace, $ret); } return $ret; } ?>Kenyataan: Kandungan artikel ini disumbangkan secara sukarela oleh netizen, dan hak cipta adalah milik pengarang asal. Laman web ini tidak memikul tanggungjawab undang-undang yang sepadan. Jika anda menemui sebarang kandungan yang disyaki plagiarisme atau pelanggaran, sila hubungi admin@php.cn