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Homephp教程php手册PHP网站开发中常用的8个小技巧

这篇文章主要介绍了PHP网站开发中常用的8个小技巧,本文讲解了命名、使用、PHP判断Form表单是否提交、PHP 获取字符串长度、PHP超全局对象等内容,需要的朋友可以参

PHP是一种用于创建动态WEB页面的服务端脚本语言。如同ASP和ColdFusion,用户可以混合使用PHP和HTML编写WEB页面,当访 问者浏览到该页面时,服务端会首先对页面中的PHP命令进行处理,然后把处理后的结果连同HTML内容一起传送到访问端的浏览器。但是与ASP或 ColdFusion不同,PHP是一种源代码开放程序,拥有很好的跨平台兼容性。用户可以在Windows NT系统以及许多版本的Unix系统上运行PHP,而且可以将PHP作为Apache服务器的内置模块或CGI程序运行。 本文总结了PHP日常开发中常用的8个小技巧。

PHP批最取得checkbox的值

1、命名

复制代码 代码如下:


复制代码 代码如下:


if(! empty($_POST['checkbox'])) {
$expr = join(“,”, $_POST['checkbox']);
$sql = “select * from tbl_name where field in ($expr)”;
}


如果参与控制的字段是数值型的,,则

复制代码 代码如下:


if(! empty($_POST['checkbox'])) {
$expr = “‘”.join(“‘,'”, $_POST['checkbox']).”.”;
$sql = “select * from tbl_name where field in ($expr)”;
}


3、PHP判断Form表单是否提交

复制代码 代码如下:


$action=$HTTP_POST_VARS["Button1"];

if($action==”提交”)
{
//执行表单操作
}
else
{
//读取默认值
}


4、PHP 获取字符串长度

复制代码 代码如下:


strlen($myrow[1])


PHP Url转向

复制代码 代码如下:


Header(“Location: “.$_SERVER["HTTP_REFERER"]);


5、PHP超全局对象

复制代码 代码如下:


$a = 1;
$b = 2;
function Sum()
{
$GLOBALS["b"] = $GLOBALS["a"] + $GLOBALS["b"];
}
Sum();
echo $b;
?>


6、PHP 表单取值

如果  mothod=”get”  就用  $_GET["test"]  代替$test

如果  mothod=”post”  就用  $_POST["test"]  代替$test

7、PHP取得当前IP

复制代码 代码如下:




8、PHP 取得当前时间

复制代码 代码如下:


echo date(“Y-m-d G:i:s”);
?>
date(“Y年m月d日”)
Date (“Y-n-j”)

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