- explode: documentation ( source)
<?php
$rec['birthday']= "";
if(isset($rec['birthday']) && $rec['birthday'] != "")
{
$dates = explode("/",$rec['birthday']);
if(!isset($dates[2]))
$dates[2] = "0000";
$newdate = $dates[0]."-".$dates[1]."-".$dates[2];
echo $newdate;
}
else
{
$newdate="";
}
?>