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run code in 300+ PHP versions simultaneously
<?php $input = '1234567'; $array = ['1', '12', '123', '1234', '456', '56', '7', '3456', '234567']; function get_best_prefix($input, $array){ $best = ''; $sizeBest = 0; foreach ($array as $data) { if (strpos($input, $data) === 0) { $current = strlen($data); if($sizeBest < $current){ $sizeBest = $current; $best = $data; } } } return $best; } echo get_best_prefix($input, $array);
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1234

preferences:
223.05 ms | 404 KiB | 339 Q