PHP region Two-level linkage drop-down Menu code

 <?php header (' Content-type:application/json; Charset=utf-8 ');  
Echo ' province=[]; foreach ($arrProvinces as $province) {echo ' Province.push ['. $province [' Provinceid ']. ', '. $province [' Provincename ']  
.'"]);';  
}  
Echo ' city=[]; foreach ($arrCitys as $city) {echo ' City.push ['. $city [' Provinceid ']. $city [' Cityid ']. $city [' CityName ']. '  
]);'; }

 <script type= "Text/javascript" > Function initprovince () {var Objprov = jQuery (' #locationForm '). Get (  
    0). province;  
    objProv.options.length = 0;  
    for (var i=0 i<province.length; i++) {objprov.options[i] = new Option (province[i][1), province[i][0]);  
    } function Onprovincechange () {var Objprov = jQuery (' #locationForm '). Get (0). province;  
    var objcity = jQuery (' #locationForm '). Get (0). City;  
    Provinceid = Objprov.value;  
    objCity.options.length = 0;  
    Objcity.options[0] = new Option (' Please select ', 0);  for (var i=1,j=1 i<=city.length; i++) {if (city[i-1][0] = = Provinceid) {objcity.options[j++]  
        = new Option (city[i-1][2], city[i-1][1]);  
}} jQuery (document). Ready (function () {initprovince ();  
}); </script> 

<form id= "Locationform" >  
    <select id= "province" onchange= "Onprovincechange ()" ></select>   
    <select id= "City" ></select>  
</form>