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run code in 300+ PHP versions simultaneously
<?php function outside() { $a = array( '1' => 'one', '2' => 'two' ); $c = 100; $o = ''; while ( --$c ) { $o .= strtr( $c, $a ); } return $o; } function inside() { $c = 100; $o = ''; while ( --$c ) { $b = array( '1' => 'one', '2' => 'two' ); $o .= strtr( $c, $b ); } return $o; }
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3

preferences:
47.12 ms | 406 KiB | 5 Q