일반적인 PHP 함수 라이브러리에 대한 실용적인 팁 요약

function PHP_Read($file_name) { 
$fd=fopen($file_name,r); 
while($bufline=fgets($fd, 4096)){ 
$buf.=$bufline; 
} 
fclose($fd); 
return $buf; 
}

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; 
}

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 
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 
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 
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 
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); 
}

function urlParse($str = ''){ 
if ('' == $str) return $str; 
$types = array("http", "ftp", "https"); 
$replace = << 
&#39;&#39;.
htmlentities
(&#39;\1&#39;).htmlentities(&#39;\2&#39;).&#39;&#39; 
EOPHP; 
$ret = $str; 
while(list(,$type) = each($types)){ 
$ret = preg_replace("|($type://)([^\s]*)|ie ", $replace, $ret); 
} 
return $ret; 
}