PHP常用函数推荐
1.产生随机字符串函数
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 $hash;
}
2.截取一定长度的字符串
注：该函数对GB2312使用有效
function wordscut($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.取得客户端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"))
&n
相关文档：
#apt-get install apache2
//安装apahce2
#apt-get install php5
//安装php5
#apt-get install mysql-server
//安装mysql服务端
#apt-get install mysql-myclient
//安装mysql的客户端
#apt-get install php-mysql
//安装php-mysql的连结
apache+php+mysql 环境已经搭建好了
将以下的服务重启一下
#/et ......
<div id="time" align="center">time </div>
<script language="javascript">
function time1()
{
var now,n,y,r,h,m,s;
now=new Date();
n = now.getYear();
y = now.getMonth()+1;
r = now.getDate();
h = now.getHours();
m =now.getMinutes();
s = now.getSeconds();
......
文件check.php
<?php
//生成验证码图片
Header("Content-type: image/PNG");
srand((double)microtime()*1000000);//播下一个生成随机数字的种子，以方便下面随机数生成的使用
session_start();//将随机数存入session中
$_SESSION['authnum']="";
$im = imagecreate(62,20); //制定图片背景大小
$black = ImageC ......
<?php
/*
* Created on 2009-10-28
* 分子如梦o(╯□╰)o
* To change the template for this generated file go to
* Window - Preferences - PHPeclipse - PHP - Code Templates
*/
interface pusb{
function verson();
......
<?php
error_reporting(0);//7all,0no
ini_set('display_errors', '0');
function myerror($errno, $errstr, $errfile, $errline)
{
echo "<BR>error type: [$errno] $errstr<br />\n";
echo "in line $errline of file $errfile<BR>";
} ......
