ltrim — Strip whitespace (or other characters) from the beginning of a string
You Can Use The code Below For a String or an Array:
echo ltrim("001221", '0');
$array = array("00051", "205400", "01022", "0005","000000");
foreach($array as $item) {
$new_item = ltrim($item, '0');
echo $new_item;
}
solved How to remove the zeros on the left using Php [closed]