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@ 2013-11-18T14:58:22Z

<?php

$text = "PHP [gallery-1]. [gallery-2]";

if (preg_match_all("/\b[gallery-\b/i", $text, $matches, PREG_OFFSET_CAPTURE)) {
    print_r($matches);

$position = $matches[0][0][1];

} else {
    echo "A match was not found.";
}

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
preg_match_all: documentation ( source)

preferences:dark modelive preview

49.7 ms | 402 KiB | 5 Q