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<?php
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function alert($msg){
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echo "<script>alert('$msg');</script>";
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}
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function d_htmlspecialchars($string) {
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if(is_array($string)) {
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foreach($string as $key => $val) {
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$string[$key] = d_htmlspecialchars($val);
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}
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} else {
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$string = str_replace('&', '&', $string);
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$string = str_replace('"', '"', $string);
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$string = str_replace(''', ''', $string);
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$string = str_replace('<', '<', $string);
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$string = str_replace('>', '>', $string);
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$string = preg_replace('/&(#\d;)/', '&\1', $string);
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}
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return $string;
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}
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function d_addslashes($string, $force = 0) {
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if(!$GLOBALS['magic_quotes_gpc'] || $force) {
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if(is_array($string)) {
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foreach($string as $key => $val) $string[$key] = d_addslashes($val, $force);
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}
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else $string = addslashes($string);
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}
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return $string;
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}
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function randstr($length) {
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$hash = '';
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$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
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$max = strlen($chars) - 1;
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mt_srand((double)microtime() * 1000000);
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for($i = 0; $i < $length; $i++) {
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$hash .= $chars[mt_rand(0, $max)];
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}
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return $hash;
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}
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function trans_time($timestamp){
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if($timestamp < 1) echo '无效的Unix时间戳';
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else return date("Y-m-d H:i:s",$timestamp);
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}
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function get_ip() {
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if ($_SERVER["HTTP_X_FORWARDED_FOR"])
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$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
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else if ($_SERVER["HTTP_CLIENT_IP"])
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$ip = $_SERVER["HTTP_CLIENT_IP"];
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else if ($_SERVER["REMOTE_ADDR"])
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$ip = $_SERVER["REMOTE_ADDR"];
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else if (getenv("HTTP_X_FORWARDED_FOR"))
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$ip = getenv("HTTP_X_FORWARDED_FOR");
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else if (getenv("HTTP_CLIENT_IP"))
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$ip = getenv("HTTP_CLIENT_IP");
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else if (getenv("REMOTE_ADDR"))
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$ip = getenv("REMOTE_ADDR");
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else
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$ip = "Unknown";
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return $ip;
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}
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function timelag($old_time,$return_type='m'){
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if($old_time < 1){
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echo '无效的Unix时间戳';
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}else{
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switch($return_type){
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case 'h':
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$type = 3600; break;
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case 'm':
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$type = 60; break;
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case 's':
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$type = 1; break;
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case '':
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$type = 60; break;
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}
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$dif = round( (time()-$old_time)/$type ) ;
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return $dif;
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}
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}
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function url_this(){
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$url = "http://".$_SERVER ["HTTP_HOST"].$_SERVER["REQUEST_URI"];
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$return_url = "<a href='$url'>$url</a>";
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return $return_url;
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}
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function url_redirect($url,$delay=''){
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if($delay == ''){
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echo "<script>window.location.href='$url'</script>";
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}else{
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echo "<meta http-equiv='refresh' content='$delay;URL=$url' />";
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}
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}
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}
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?>