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PHP 日常开发小技巧

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Jun 13, 2016 pm 12:21 PM

inputnamephptypeVAnameSmalldevelopSkilldaily

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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