php - AJAX Failing when fetching data from another server -


i read ajax not work remote found solution still facing how pure ajax, guide?? searched lot , tried methods, did not get. when using same ip , fetching data ,its working warning,but when giving server ip, not fetch .

function tooltipajax(r_id) {     if (window.xmlhttprequest) {         // code ie7+, firefox, chrome, opera, safari         xmlhttp=new xmlhttprequest();     }     else {         // code ie6, ie5         xmlhttp=new activexobject("microsoft.xmlhttp");     }      xmlhttp.onreadystatechange = function() {         if (xmlhttp.readystate==4 && xmlhttp.status==200) {             document.getelementbyid('span'+ r_id).innerhtml = xmlhttp.responsetext;         }     }      xmlhttp.open("get","http://ip here/common/accounteditajax.php?key=" +r_id,true);     xmlhttp.send(); }

i tried header

header("access-control-allow-origin: http://ip here/common/");

it worked local server ip warning cannot modify header information - headers sent (output started at

but not working server ip..


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