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@ 2014-05-26T17:22:20Z

<?php

$phrases = array("Aaa", "abb", "acc", "bbb", "bb2");
$groups = array();

foreach($phrases as $phrase) {
        $firstLetter = mb_strtoupper($phrase{0});
        $groups[$firstLetter][] = $phrase;
}
print_r($groups);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
mb_strtoupper: documentation ( source)

preferences:dark modelive preview

34.42 ms | 402 KiB | 5 Q