PHP learning materials bits and pieces

Use when verifying code

strtolower($str) to lowercase

strtoupper

When you need to pass values ​​to the local area, you can use AJAX and many other methods.

var url = "";
var data={};
$.post{url ,data,function(){
if(data){
alert(data);//You will find that the pop-up data contains the value you passed, as well as the code for the entire page
}
}}

if(!empyt($_QUEST['action'])){
echo "1"；
//Execute the code
}else{

}
var url = "?action=create";
var data={};
$.post{url ,data,function(){
if(data){
alert(data);//This time there will be only the information you want to output.
}
}}