8 tips commonly used in PHP dynamic website development_PHP tutorial

This article summarizes 8 tips commonly used in daily PHP development.

PHP batch gets the checkbox value

1. Naming

2. Use

When the plan is used as part of the sql instruction: If the fields participating in the control are numerical, then

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

If the field participating in the control is numeric, then

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

PHP determines whether the Form is submitted

$action=$HTTP_POST_VARS["Button1"];
if($action=="Submit")
{
//Perform form operation
}
else
{
//Read the default value
}

PHP Get the string length

strlen($myrow[1])

PHP Url redirection

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

PHP superglobal object

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

PHP form value

If mothod="get" use $_GET["test"] instead of $test
If mothod="post" use $_POST["test"] instead of $test

PHP gets the current IP

PHP Get the current time

echo date("Y-m-d G:i:s");
?>
date("Y year m month d day")
Date ("Y-n-j ")

http://www.bkjia.com/PHPjc/531666.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/531666.htmlTechArticleThis article summarizes 8 tips commonly used in daily PHP development. Get the checkbox value in PHP batch 1. Name input type=checkbox name=checkbox[] value=$dwmyrow[banzhu] / 2. Use When planning...