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PHP开发中常用到一些技巧

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Release: 2016-06-06 19:56:13
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以下为引用的内容: 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("','",

 以下为引用的内容:

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

以下为引用的内容:

$action=$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

以下为引用的内容:

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


PHP 表单取值

以下为引用的内容:

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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