1.產生隨機字符串函數
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 $hash; } 2.截取一定長度的字符串 注：該函數對gb2312使用有效 function wordscut($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;
}
3.取得客戶端ip 地址
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);
}
4. 創建相應的文件夾
function createdir($dir=@#@#)
{
if (!is_dir($dir))
{
$temp = explode(@#/@#,$dir);
$cur_dir = @#@#;
for($i=0;$i
if(!empty($url))
$html .="
$html .="
$html .="
";
$html .="
$html .="
$html .="
$html .="
$html .="".$title."";
$html .="
$html .="
".$message."
";
if (!empty($url))
$html .="系統將在3秒後返回
如果您的瀏覽器不能自動返回,請點擊[這裡]進入";
else
$html .="[返回]";
$html .="";
$html .="";
echo $html;
exit;
}
7. 分頁（兩個函數配合使用）
function getpage($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; $out="共& lt;font ".$totalpage."color=@#red@#>".$totalpage."< /font>頁";
$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)
$out .= "
if($start>1)
$out.="
for($t=$start;$t<=$end;$t ) { $out .= ($page==$t) ? "[".$t."] " : "
}
if($end<$totalpage) $out.="
if($page<>$totalpage)
$out .= "
return $out;
}
8.獲取新插入數據的 id
