- strpos: documentation ( source)
<?php
$str = "&foobar&foobaz";
$toFind = 'foo';
$start = 2;
$pos = 0;
while($pos = strpos($str,$toFind,$pos) !== FALSE) {
//echo "Starting" . $start;
echo 'Found '.$toFind.' at position '.$pos."\n";
$pos++;
//$start = $pos + 1; // start searching from next position.
//echo "Start" . $start;
}