android application development 8 tips commonly used in PHP development

PHP batch gets the checkbox value
1. Name

2. Use
when the plan is used as part of the sql command When: 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 ($expr)";
}
If the field participating in the control is numeric, then
if(! empty($_POST['checkbox'])) {
$expr = "'".join("','", $_POST['checkbox']).".";
$sql = "select * from tbl_name where field in ($expr)";
}
PHP determines the Form form Whether to submit
$action=$HTTP_POST_VARS["Button1"];
if($action=="Submit")
{
//Perform form operation
}
else
{
//Read default value
}
PHP Get the string length
strlen($myrow[1])
PHP Url redirection
Header("Location: ".$_SERVER["HTTP_REFERER"]);
PHP super global object
$a = 1;
$b = 2;
function Sum()
{
$GLOBALS["b"] = $GLOBALS["a"] + $GLOBALS["b"];
}
Sum();
echo $b;
?>
PHP form value
If method="get", use $_GET["test"] instead of $test
If method="post", use $_POST["test"] instead of $test
PHP obtain Current IP

PHP Get the current time
echo date("Y-m-d G:i:s");
?>
date("Y
Date ("Y-n-j")

The above introduces the 8 tips commonly used in PHP development for android application development, including the content of android application development. I hope it will be helpful to friends who are interested in PHP tutorials.