文件讀取函式 //文件讀取函式 function PHP_Read($file_name) { $fd=fopen($file_name,r); while($bufline=fgets($fd, 4096)){ $buf.=$bufline; } fclose($fd); return $buf; } ?>

文件寫入函式

//文件寫入函式 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; } ?>

靜態(tài)頁面生成函式 //靜態(tài)頁面生成函式 function phptohtm($filefrom,$fileto,$u2u=1){ if($u2u==1){ $data=PHP_Read($filefrom); }else{ $data=$filefrom; } PHP_Write($fileto,$data); return true; } ?>

指定條件信息數(shù)量檢索函式

//指定條件信息數(shù)量檢索函式 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; } ?>

目錄刪除函式 //目錄刪除函式 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 '; }?>

目錄名稱合法性檢測函式 //目錄名稱合法性檢測 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('不符合規(guī)范！'); } $ret.=chr($p); } return $ret; } ?>

分頁函式 //分頁函式 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('該版內(nèi)還沒有選擇發(fā)布新聞 ！'); } $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); } ?>

關(guān)于分頁函式的使用說明; /* #### 檢索分頁函式 #### Int $HALT - 檢索結(jié)果僅分1頁時(shí)是否(1/0)顯示頁碼條 Int $LRLIST - (頁碼條顯示頁碼數(shù)-1)/2 Int $ECHOCNT - 檢索時(shí)每頁顯示記錄的數(shù)量 Int $paper - 頁數(shù)，預(yù)提取：$paper=$HTTP_GET_VARS[paper]; Varchar $table - 數(shù)據(jù)表名,預(yù)附值：$table='db.table'; Varchar $where - 檢索條件，預(yù)附值：$where='where field='value''; Varchar $enwhere - 將原$where進(jìn)行兩次base64_encode()編碼后以GET的方式提交 Varchar $splitstr - 頁碼條輸出字串，執(zhí)行函式后在相應(yīng)的位置執(zhí)行 echo $splitstr; 函式調(diào)用前需獲取變量 - $paper=$HTTP_GET_VARS[paper]; $sumcnt=$HTTP_GET_VARS[sumcnt]; $enwhere=$HTTP_GET_VARS[enwhere]; Return (Varchar $where) - 分頁后檢索語句的檢索條件 注意：本函式需調(diào)用出錯(cuò)處理函式 nerror($error); */

圖片文件上傳函式

//圖片文件上傳函式 function upload_img($UploadFile,$UploadFile_name,$UploadFile_size,$UploadPath,$max_size=64){ //$TimeLimit=60; //設(shè)置超時(shí)限制時(shí)間 缺省時(shí)間為 30秒 設(shè)置為0時(shí)為不限時(shí) //set_time_limit($TimeLimit); if(($UploadFile!= 'none' )&&($UploadFile != '' )){ $FileName=$UploadPath.$UploadFile_name; if($UploadFile_size <1024){ $FileSize='(string)$UploadFile_size' . '字節(jié)'; }elseif($UploadFile_size <(1024 * $max_size)){ $FileSize=number_format((double)($UploadFile_size / 1024), 1) . ' KB'; }else{ nerror('文件超過限制大小！'); } //{ //$FileSize='number_format((double)($UploadFile_size' / (1024 * 1024)), 1) . ' MB'; // } if(!file_exists($FileName)){ if(copy($UploadFile,$FileName)){ return '$UploadFile_name ($FileSize)'; }else{ nerror('文件 $UploadFile_name 上載失敗！'); } unlink($UploadFile); }else{ nerror('文件 $UploadFile_name 已經(jīng)存在！'); } //set_time_limit(30); //恢復(fù)缺省超時(shí)設(shè)置 } }

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以下是一些小技巧：--------------------------------------------------------------------------------

如何判斷ip地址合法性if(!strcmp(long2ip(sprintf('%u',ip2long($ip))),$ip)) echo 'is ipn';----email的正則判斷eregi('^[_.0-9a-zA-Z-]+@([0-9a-zA-Z][0-9a-zA-Z_-]+.)+[a-zA-Z]$', $email);

檢測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';?>----

文件下載頭部輸出如何設(shè)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輸出ftp下載方式,并且支持?jǐn)帱c(diǎn)續(xù)傳一個(gè)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技術(shù)開發(fā)知識(shí)庫/cn_web.rmvb');

正則匹配中文ereg('^['.chr(0xa1).'-'.chr(0xff).']+$', $str);

批量替換文本里面的超級鏈接<?phpfunction urlParse($str = ''){ if ('' == $str) return $str;

$types = array('http', 'ftp', 'https');

$replace = <<<EOPHP '<a href='http://www.piao2010.com/bcjs/21942.html'.htmlentities('1').htmlentities('2').''>'.htmlentities('1').htmlentities('2').'</a>'EOPHP;

$ret = $str;

while(list(,$type) = each($types)){ $ret = preg_replace('|($type://)([^s]*)|ie ', $replace, $ret);}

return $ret;}?>