<?php $array = [ 'list[P] = 1', 'list[A] = 1', 'list[F] = 2', 'list[B] = 1' ]; usort( $array, fn($a, $b) => explode('= ', $a, 2)[1] <=> explode('= ', $b, 2)[1] ); var_export($array);
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