PHP技巧教程:PHP网站开发常用8个小技巧
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
2、使用
当计划当作sql指令的一部分时:如果参与控制的字段是数值型的,则
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
if(! empty(_POST['checkbox'])) {
expr = "'".join("','", _POST['checkbox']).".";
sql = "select * from tbl_name where field in (expr)";
}
PHP判断Form表单是否提交
action=HTTP_POST_VARS["Button1"];
if(action=="提交")
{
//执行表单操作
}
else
{
//读取默认值
}
PHP 获取字符串长度
strlen(myrow[1])
PHP Url转向
Header("Location: "._SERVER["HTTP_REFERER"]);
PHP超全局对象
a = 1;
b = 2;
function Sum()
{
GLOBALS["b"] = GLOBALS["a"] + GLOBALS["b"];
}
Sum();
echo b;
?>
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
PHP取得当前IP
=HTTP_SERVER_VARS["REMOTE_ADDR"]?>
PHP 取得当前时间
echo date("Y-m-d G:i:s");
?>
date("Y年m月d日")
Date ("Y-n-j")

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