File reading function
//File reading function
function PHP_Read($file_name) {
$fd=fopen($file_name,r);
while($bufline=fgets($fd, 4096)){
$buf.=$bufline;
}
fclose($fd);
Return $buf;
}
?>
File writing function
//File writing function
function PHP_Write($file_name,$data,$method="w") {
$filenum=@fopen($file_name,$method);
flock($filenum,LOCK_EX);
$file_data=fwrite($filenum,$data);
fclose($filenum);
Return $file_data;
}
?>
Static page generation function
//Static page generation function
function phptohtm($filefrom,$fileto,$u2u=1){
if($u2u==1){
$data=PHP_Read($filefrom);
}else{
$data=$filefrom;
}
PHP_Write($fileto,$data);
Return true;
}
?>
Specify condition information quantity retrieval function
//Specify condition information quantity retrieval function
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 $num;
}
?>
Directory deletion function
//Directory deletion function
function del_DIR($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 $directory ok
";
}
?>
Directory name validity detection function
//Directory name legality detection
function isen($str){
$ret="";
for($i=0;$i $p=ord(substr($str,$i,1));
if(($p57 & $p90 & $p122){
nerror("Does not meet the specification!");
}
$ret.=chr($p);
}
Return $ret;
}
?>
Pagination function
//Paging function
function splitlist($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("There is no choice to publish news in this version!");
}
$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(($LRLIST*2+1)
if(($paper-$LRLIST)
$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
if ($i!=$paper) $splitstr.="".$i." ";
else $splitstr.="".$i." ";
}
if ($sub!=$sumpaper) $splitstr.=">> 】";
else $splitstr.=">> 】";
return($where);
}
?>
Instructions for using paging functions
/*
#### Retrieve paging function ####
Int $HALT - Whether (1/0) displays the page number bar when the search results are only divided into 1 page
Int $LRLIST - (The page number bar displays the page number-1)/2
Int $ECHOCNT - The number of records displayed on each page during retrieval
Int $paper - number of pages, prefetch: $paper=$HTTP_GET_VARS[paper];
Varchar $table - data table name, pre-attached value: $table="db.table";
Varchar $where - search conditions, pre-attached value: $where="where field='value'";
Varchar $enwhere - Encode the original $where twice with base64_encode() and submit it in the form of GET
Varchar $splitstr - page number bar output string, execute the function at the corresponding position echo $splitstr;
Variables need to be obtained before function call -
$paper=$HTTP_GET_VARS[paper];
$sumcnt=$HTTP_GET_VARS[sumcnt];
$enwhere=$HTTP_GET_VARS[enwhere];
Return (Varchar $where) - Search conditions for search statements after paging
Note: This function needs to call the error handling function nerror($error);
*/
?>
Image file upload function
//Image file upload function
function upload_img($UploadFile,$UploadFile_name,$UploadFile_size,$UploadPath,$max_size=64){
//$TimeLimit=60; //Set the timeout limit time. The default time is 30 seconds. When set to 0, there is no time limit
//set_time_limit($TimeLimit);
if(($UploadFile!= "none" )&&($UploadFile != "" )){
$FileName=$UploadPath.$UploadFile_name;
if($UploadFile_size
$FileSize="(string)$UploadFile_size" . "Bytes";
}elseif($UploadFile_size
$FileSize=number_format((double)($UploadFile_size / 1024), 1) . " KB";
}else{
nerror("File exceeds limit size!");
}
//{
//$FileSize="number_format((double)($UploadFile_size" / (1024 * 1024)), 1) . " MB";
// }
if(!file_exists($FileName)){
if(copy($UploadFile,$FileName)){
Return "$UploadFile_name ($FileSize)";
}else{
nerror("File $UploadFile_name upload failed!");
}
unlink($UploadFile);
}else{
nerror("The file $UploadFile_name already exists!");
}
//set_time_limit(30); //Restore the default timeout setting
}
}
?>

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

查找方法:1、用strpos(),语法“strpos("字符串值","查找子串")+1”;2、用stripos(),语法“strpos("字符串值","查找子串")+1”。因为字符串是从0开始计数的,因此两个函数获取的位置需要进行加1处理。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。

在php中,可以利用ltrim()函数来去掉字符串首位的tab空白符,语法为“ltrim(string)”;当只给ltrim()函数传入一个参数,用于规定要检查的字符串时,可删除该字符串开始位置的空白字符(例空格、tab制表符、换行符等)。

转化方法:1、使用“mb_substr($url,stripos($url,"?")+1)”获取url的参数部分;2、使用“parse_str("参数部分",$arr)”将参数解析到变量中,并传入指定数组中,变量名转为键名,变量值转为键值。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Linux new version
SublimeText3 Linux latest version

WebStorm Mac version
Useful JavaScript development tools

Dreamweaver CS6
Visual web development tools

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

SublimeText3 Chinese version
Chinese version, very easy to use
