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albe/gist:da6f80a5d727d4c67656

Created August 10, 2015 10:22
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gistfile1.txt
$lockfile = fopen('lock', 'w+');
if (flock($lockfile, LOCK_EX | LOCK_NB)) {
unlink('lock');
echo 'locked...';
sleep(10);
flock($lockfile, LOCK_UN);
} else {
echo 'already locked...';
}
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