it’s located here
for ($i = 0; $i < $m – 2; $i++) {
$goodSuffixes[$m – 1 – $suff[$i]] = $m – $i – 1;
}

the code should be replaced with
for ($i = 0; $i <= $m – 2; $i++) {
$goodSuffixes[$m – 1 – $suff[$i]] = $m – $i – 1;
}

testcase is
pattern: abbccab
text: abaccabaabbccababbccab

the result should be 8 and 15
with the old version it's 15 only

PS: thanks for the PHP solution and the article. nicely done!

For example, let A=”123″
text: …b123c123
pattern: 123c123
next should compare from first A( =”123″), not letter c, as you said, over whold pattern.
Am I right?