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run code in 300+ PHP versions simultaneously
<?php $arr = array(1,2,3,4,5,6,7,8,9,10,'a','b','c','d','e','f','g','h','i','j'); $tmp0 = $arr[0]; $tmp1 = $arr[10]; $n=10; for($i=0,$j=$n;$i<count($arr);$i+=2,$j++){ $arr[$i]=$tmp0; $tmp0 = $arr[$i+1]; $arr[$i+1]=$tmp1; $tmp1 = $arr[$j+1]; } for($i=0;$i<count($arr);$i++){ echo($arr[$i]." "); } ?>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key 20 in /in/tn21N on line 11 1 a 2 b 4 c 6 d 8 e 10 f b g d h f i h j
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined offset: 20 in /in/tn21N on line 11 1 a 2 b 4 c 6 d 8 e 10 f b g d h f i h j
Output for 7.3.32 - 7.3.33
1 a 2 b 4 c 6 d 8 e 10 f b g d h f i h j
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
Notice: Undefined offset: 20 in /in/tn21N on line 11 1 a 2 b 4 c 6 d 8 e 10 f b g d h f i h j
preferences:
187.98 ms | 402 KiB | 313 Q