===========计算页面执行时间============
在PHP网页的开头加入以下
<?
$time_start = getmicrotime();
function getmicrotime()
{
list($usec, $sec) = explode(" ",microtime());
return ((float)$usec + (float)$sec);
}
?>
然后到最后加入以下代码
<?
$time_end = getmicrotime();
printf ("[页面执行时间: %.2f毫秒]\n\n",($time_end - $time_start)*1000);
?>
============php和access链接===========
<?
$dbc = new COM("ADODB.Connection");
$dbc->Open("driver=microsoft access driver (*.mdb);dbq=D:\PHP\PHPJJXX\db1.mdb");
$rs = $dbc->Execute("select * from 2");
$i = 0;
while (!$rs->EOF) {
$i += 1;
$fld0 = $rs->Fields(0);
$fld1 = $rs->Fields(1);
$fld2 = $rs->Fields(2);
print "$fld0->value $fld1->value $fld2->value<BR>";
$rs->MoveNext();
}
$rs->Close();
?>
=======PHP中比较值得推荐的数据验证的类==========
<?php
class checker{
// 函数定义
var $array_data=""; //要验证的数组数据
var $var_key=""; //当前要验证的数据的key
var $var_value=""; //当前要验证的数据的值
var $is_empty=""; //要验证的值可以为空
var $array_info=""; //提示信息收集
var $array_errors=array(); //错误信息收集
//--------------------->构造函数<------------
function checker($date){
$this->array_data=$date;
}
//--------------------->数据检验函数<-------------
function check($array_datas){
foreach($array_datas as $value_key => $value_v){
$temp1=explode('|',$value_v);
if($temp1[0]=="i_empty" and empty($this->array_data[$value_key])){
;
}else{
foreach($temp1 as $temp_key => $value_con){
//$data_temp=$this->array_data;
//var_dump($data_temp['birthday']);
//echo "--".$value_key."--<br>";
$this->var_key=$value_key;
$this->var_value=$this->array_data[$value_key];
$temp2=explode(':',$value_con);
switch(count($temp2)){
case 0:
$this->array_errors[$this->var_key]="此值的验证请求不存在";
break;
case 1:
//如果用户没有指定验证动作
if(empty($temp2[0])){
$this->array_errors[$this->var_key]="此值的验证请求不存在";
break;
}else{
$this->$temp2[0](); //如果返回值为非,就不用进行下一步验证
break;
}
case 2:
$this->$temp2[0]($temp2[1]);
break;
case 3:
$this->$temp2[0]($temp2[1],$temp2[2]);
break;
}
}
}
}
}
function i_empty(){
$this->is_empty=1; //这个值没什么用,只是说明要验证的值可以是空值
}
//日期数据、邮件地址、浮点数据、整数、IP地址、字符串、最大值、最小值、字符串长度、域名、URL
//-------------------->日期验证--------------------
function i_date(){
//约定格式:2000-02-01或者:2000-5-4
if (!eregi("^[1-9][0-9][0-9][0-9]-[0-9]+-[0-9]+$", $this->var_value)) {
$this->array_errors[$this->var_key]="日期格式错误";
return false;
}
$time = strtotime($this->var_value);
if ($time === -1) {
$this->array_errors[$this->var_key]="日期格式错误";
return false;
}
$time_e = explode('-', $this->var_value);
$time_ex = explode('-', Date('Y-m-d', $time));
for ($i = 0; $i < count($time_e); $i++) {
if ((int)$time_e[$i] != (int)$time_ex[$i]) {
$this->array_errors[$this->var_key]="日期格式错误";
return false;
}
}
return true;
}
//-------------------->时间验证--------------------
function i_time() {
if (!eregi('^[0-2][0-3](:[0-5][0-9]){2}$', $this->var_value)) {
$this->array_errors[$this->var_key]="时间格式错误";
return false;
}
return true;
}
//-------------------->email验证--------------------
function i_email(){
if(!eregi("^[0-9a-z~'!#$%&_-]([.]?[0-9a-z~!#$%&_-])*" .
"@[0-9a-z~!#$%&_-]([.]?[0-9a-z~!#$%&_-])*$", $this->var_value))
$this->array_errors[$this->var_key]="邮件格式错误<br>";
//echo $this->var_value;
return true;
}
//-------------------->浮点数验证--------------------
function i_float(){
//if(!is_float($this->var_value))
if(!ereg("^[1-9][0-9]?\.([0-9])+$",$this->var_value))
$this->array_errors[$this->var_key]="这不是一个小数";
}
//-------------------->字符串验证--------------------
function i_string(){
if(empty($this->var_value)) //允许为空
return true;
if(!is_string($this->var_value))
$this->array_errors[$this->var_key]="这不是一个字符串";
return true;
}
//-------------------->字符串长度验证--------------------
function len($minv,$maxv=-1){
$len = strlen($this->var_value);
if($len==0){
$this->array_errors[$this->var_key]="不能为空值";
return false;
}
if ($len < $minv) {
$this->array_errors[$this->var_key]="输入的串太短了";
return false;
}
if ($maxv != -1) {
if ($len > $maxv) {
$this->array_errors[$this->var_key]="输入的串太长了";
return false;
}
}
return true;
}
//-------------------->整数验证--------------------
function i_int(){
if(!ereg("^[0-9]*$",$this->var_value))
$this->array_errors[$this->var_key]="这不是一个整数";
}
//-------------------->IP地址验证--------------------
function i_ip(){
if(!ereg("^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$", $this->var_value)){
$this->array_errors[$this->var_key]="错误的IP地址";
}else{
//每个不大于255
$array_temp=preg_split("/\./",$this->var_value);
foreach($array_temp as $ip_value){
if((int)$ip_value >255)
$this->array_errors[$this->var_key]="错误的IP地址";
}
}
return true;
}
//-------------------->最大值验证--------------------
function i_max($maxv){
if($this->var_value >= $maxv){
$this->array_errors[$this->var_key]="数据值太大";
return false;
}
return true;
}
//-------------------->最小值验证--------------------
function i_min($minv){
if($this->var_value <= $minv){
$this->array_errors[$this->var_key]="数据值太小";
return false;
}
return true;
}
//-------------------->域名验证--------------------
function i_domain() {
if(!eregi("^@([0-9a-z\-_]+\.)+[0-9a-z\-_]+$", $this->var_value))
$this->array_errors[$this->var_key]="错误的域名";
return eregi("^@([0-9a-z\-_]+\.)+[0-9a-z\-_]+$", $this->var_value);
}
//-------------------->URL验证--------------------
function i_url(){
if(!eregi('^(http://|https://){1}[a-z0-9]+(\.[a-z0-9]+)+$' , $this->var_value))
$this->array_errors[$this->var_key]="错误的WEB地址";
return true;
}
//-------------------->自定义正则校验--------------------
function check_own($user_pattern){
//自定义校验。出错返回false,匹配返回1,不匹配返回0
$tempvar=preg_match($user_pattern,$this->var_value);
if($tempvar!=1)
$this->array_errors[$this->var_key]="数据不合法";
}
######################### 类 the end ################################
}
//<----------------------------作用示例--------------------->
/*
//注意:如果允许一个值为空,则在验证数组前加上i_empty就行了。
//:前面第一个是验证函数,后面的都是参数
$rule_list = array(
'temp' =>'check_own:"^@([0-9a-z\-_]+\.)+[0-9a-z\-_]+$"',
'time' => 'i_time',
'fload' => 'i_float|i_min:1|i_max:10.10|len:0:20',
'ipadr' => 'i_ip',
'url' =>'i_url',
'birthday' => 'i_date',
'email' => 'i_email|len:1:128',
'gender' => 'i_int|i_min:1|i_max:20',
'city' => 'i_string|len:1:32');
$rule_date = array(
'temp' => '@sina.com',
'time' => '23:59:00',
'fload' => '10.0',
'ipadr' => '251.255.1.1',
'url' => 'Https://www.gg',
'birthday' => '2004-5-4',
'gender' => '15',
'email' => '[email protected]',
'city' => 'Guangzhou');
$gg=new checker($rule_date);
$gg->check($rule_list);
print_r($gg->array_errors);
*/
?>
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