How to call a PHP function with Ajax?

Question

I have a PHP function which returns an array :

function lire( $id) {
            $ret = array() ; 
            $sSQL = \"SELECT  *  FROM produit WHERE prod_code          


        

Answer 1

this is the response to the comment you added earlier. I couldnt format it in the comment. Sorry.

 $(document).ready(function() {

      $("#idofinput").blur(function(){


    var value = $.ajax({
    type: "POST",
    url: "some.php",
    data: "name="+$("#idofinput").val(),
    async: false
    }).responseText;

    myval= parseInt(value);

    if(myval>0)
    {
        //your code goes here
    }
    else
    {
    //your code goes here
    }



    }); 

    });

You may attach the function with the input element on document load.

replace the idofinput with input element id