文件读取函式
//文件读取函式
Funktion PHP_Read($file_name) {
$fd=fopen($file_name,r);
while($bufline=fgets($fd, 4096)){
$buf.=$bufline;
}
fclose($fd);
return $buf;
}
?>
文件写入函式
//文件写入函式
Funktion PHP_Write($file_name,$data,$method="w") {
$filenum=@fopen($file_name,$method );
flock($filenum,LOCK_EX);
$file_data=fwrite($filenum,$data);
fclose($filenum);
return $file_data;
}
?>
静态页面生成函式
//静态页面生成函式
Funktion phptohtm($filefrom,$fileto,$u2u=1){
if($u2u==1){
$data=PHP_Read($filefrom);
}anders{
$data=$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
Funktion 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 $num;
}
?>
目录删除函式
//目录删除函式
Funktion del_DIR($directory){
$mydir=dir($directory);
while($file=$mydir->read()){
if((is_dir("$directory/$file")) AND ($file!=".") AND ($file!="..")){
del_DIR("$directory/$file");
}anders{
if(($file!=".") AND ($file!="..")){
unlink("$directory/$file");
//echo „Verknüpfung von $directory/$file ok“;
}
}
}
$mydir->close();
rmdir($directory);
//echo „rmdir $directory ok“;
}
?>
目录名称合法性检测函式
//目录名称合法性检测
Funktion isen($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 $ret;
}
?>
分页函式
//分页函式
Funktion splitlist($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 ！");
}
$Papier=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;
}anders{
$tract=$paper-$LRLIST;
$sub=$paper+$LRLIST;
}
}anders{
$tract=1;
$sub=$sumpaper;
}
$uppaper=$paper-1;
$downpaper=$paper+1;
$startcnt=($paper-1)*$ECHOCNT;
$where.=" limit ${ startcnt },${ ECHOCNT }";
if($tract > 1) { $splitstr="【 << "; }
sonst $splitstr="【 << ";
for($i=$tract;$i<=$sub;$i++){
if ($i!=$paper) $splitstr.="".$i." ";
sonst $splitstr.="".$i." ";
}
if ($sub!=$sumpaper) $splitstr.=">> 】";
sonst $splitstr.=">> 】";
return($where);
}
?>
关于分页函式的使用说明
/*
#### 检索分页函式 ####
Int $HALT - 100 % des Werts (1/0).
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 - Beispiel: $paper=$HTTP_GET_VARS[paper];
Varchar $table – Beispiel: $table="db.table";
Varchar $where - Beispiel: $where="where field='value'";
Varchar $enwhere - Die Verwendung von $where in base64_encode() ermöglicht die Verwendung von GET
Varchar $splitstr - Erweitert die Funktion 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 $where) – 分页后检索语句的检索条件
Fehler: nerror($error);
*/
图片文件上传函式
//图片文件上传函式
Funktion 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“;
}anders{
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)“;
}anders{
nerror("文件 $UploadFile_name 上载失败！");
}
unlink($UploadFile);
}anders{
nerror("文件 $UploadFile_name 已经存在！");
}
//set_time_limit(30); //恢复缺省超时设置
}
}
-------------------------------------------------- ---------------
以下是一些小技巧：
-------------------------------------------------- ------------------------------
如何判断ip地址合法性
if(!strcmp(long2ip(sprintf("%u",ip2long($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) == $network) echo "valid ip and maskn";
?>
----
文件下载头部输出如何设定
header("Inhaltstyp: application/x-download");
header("Content-Disposition: attachment; filename=$file_download_name;");
header("Accept-Ranges: Bytes");
header("Content-Length: $download_size");
echo 'xxx'
用header输出ftp下载方式,并且支持断点续传一个例子:
header('Pragma: public');
header('Cache-Control: privat');
header('Cache-Control: kein Cache, muss erneut validiert werden');
header('Accept-Ranges: Bytes');
header('Verbindung: schließen');
header("Content-Type: audio/mpeg");
header("Location:ftp://download:[email protected]/2222/web技术开发知识库/cn_web.rmvb");
正则匹配中文
ereg("^[".chr(0xa1)."-".chr(0xff)."]+$", $str);
批量替换文本里面的超级链接
<?php
Funktion urlParse($str = ''){
if ('' == $str) return $str;
$types = array("http", "ftp", "https");
$replace = <<<EOPHP
'<a href="'.htmlentities('1').htmlentities('2').'">'.htmlentities('1').htmlentities('2').'</a> '
EOPHP;
$ret = $str;
while(list(,$type) = every($types)){
$ret = preg_replace("|($type://)([^s]*)|ie ", $replace, $ret);
}
return $ret;
}
?>