3v4l.org

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<?php $STOP = 5; $i = 0; $j = 5; while($STOP-- > 0) { echo "i = $i ; j = $j\n"; if ( (bool) $i++ & (bool) $j++ ) { echo "2up\n"; } }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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
i = 0 ; j = 5 i = 1 ; j = 6 2up i = 2 ; j = 7 2up i = 3 ; j = 8 2up i = 4 ; j = 9 2up
preferences:
256.03 ms | 406 KiB | 460 Q