3v4l.org

run code in 300+ PHP versions simultaneously
<?php function revert($str) { $obtainStrList = explode(' ', $str); $revertStr = ''; foreach ($obtainStrList as $obtainStr) { $revertStr .= ' '; for ($i = 1; $i < mb_strlen($obtainStr) + 1; $i++) { $revertStr .= mb_substr($obtainStr, -$i, 1); } } return $revertStr; } echo revert('Delivery Club, ZakaZaka');

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0150.00618.31
8.3.50.0040.01118.32
8.3.40.0080.00818.79
8.3.30.0080.00818.84
8.3.20.0040.00419.07
8.3.10.0100.00023.61
8.3.00.0080.00023.53
8.2.180.0130.01016.75
8.2.170.0070.00722.96
8.2.160.0100.00319.07
8.2.150.0030.00524.18
8.2.140.0000.00824.66
8.2.130.0050.00320.52
8.2.120.0000.00726.35
8.2.110.0040.00719.36
8.2.100.0120.00018.22
8.2.90.0040.00418.34
8.2.80.0070.00317.97
8.2.70.0040.00418.04
8.2.60.0060.00318.16
8.2.50.0030.00618.10
8.2.40.0040.00419.48
8.2.30.0000.00722.45
8.2.20.0060.00318.04
8.2.10.0040.00418.16
8.2.00.0020.00519.48
8.1.280.0120.00325.92
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0070.00322.02
8.1.230.0090.00322.77
8.1.220.0040.00417.78
8.1.210.0000.01118.77
8.1.200.0090.00017.36
8.1.190.0040.00417.22
8.1.180.0040.00418.10
8.1.170.0050.00318.75
8.1.160.0000.00718.88
8.1.150.0000.00718.98
8.1.140.0000.00719.04
8.1.130.0000.00719.01
8.1.120.0000.00717.44
8.1.110.0030.00517.42
8.1.100.0030.00317.43
8.1.90.0040.00417.41
8.1.80.0000.00817.50
8.1.70.0000.00717.45
8.1.60.0030.00517.53
8.1.50.0030.00517.47
8.1.40.0040.00417.50
8.1.30.0080.00317.67
8.1.20.0030.00617.76
8.1.10.0050.00317.47
8.1.00.0040.00417.46
8.0.300.0040.00419.57
8.0.290.0000.00916.75
8.0.280.0040.00418.49
8.0.270.0000.00717.30
8.0.260.0030.00317.25
8.0.250.0060.00317.03
8.0.240.0040.00416.97
8.0.230.0070.00016.96
8.0.220.0040.00416.94
8.0.210.0070.00016.85
8.0.200.0000.00817.07
8.0.190.0040.00416.92
8.0.180.0000.00816.86
8.0.170.0000.00817.00
8.0.160.0030.00516.93
8.0.150.0000.00716.84
8.0.140.0000.00816.98
8.0.130.0000.00513.41
8.0.120.0040.00416.89
8.0.110.0000.00716.89
8.0.100.0040.00416.96
8.0.90.0030.00516.97
8.0.80.0060.00916.91
8.0.70.0000.00816.99
8.0.60.0060.00316.91
8.0.50.0050.00216.77
8.0.30.0100.00817.13
8.0.20.0100.00717.40
8.0.10.0000.00816.90
8.0.00.0090.00916.75
7.4.330.0000.00515.55
7.4.320.0000.00716.46
7.4.300.0040.00416.39
7.4.290.0070.00016.39
7.4.280.0070.00016.48
7.4.270.0080.00016.60
7.4.260.0080.00316.50
7.4.250.0000.00716.53
7.4.240.0040.00416.51
7.4.230.0050.00216.38
7.4.220.0030.00516.29
7.4.210.0040.01016.54
7.4.200.0050.00216.42
7.4.160.0120.00416.56
7.4.140.0110.00717.86
7.4.130.0230.00016.43
7.4.120.0120.00616.51
7.4.110.0160.00016.44
7.4.100.0120.00916.60
7.4.90.0120.00816.47
7.4.80.0140.00319.39
7.4.70.0100.00716.41
7.4.60.0120.01716.46
7.4.50.0000.01616.48
7.4.40.0120.00816.51
7.4.00.0030.01214.89
7.3.330.0020.00213.13
7.3.320.0060.00013.29
7.3.310.0000.00616.37
7.3.300.0020.00516.30
7.3.290.0040.00416.29
7.3.280.0070.01016.32
7.3.260.0110.01016.60
7.3.240.0090.01016.59
7.3.230.0090.00916.36
7.3.210.0030.01316.54
7.3.200.0080.01116.52
7.3.190.0100.00916.38
7.3.180.0090.00616.62
7.3.170.0070.01016.46
7.3.160.0080.00816.58
7.2.330.0030.01416.65
7.2.320.0100.00716.70
7.2.310.0150.01116.50
7.2.300.0030.01316.68
7.2.290.0070.01016.75
7.2.110.1290.00316.59
7.2.80.0060.00616.45
7.2.70.0080.00816.86
7.2.60.0120.00616.76
7.2.50.0050.01016.93
7.2.40.0170.00016.76
7.2.30.0040.01116.90
7.2.20.0100.00316.76
7.2.10.0120.00616.89
7.2.00.0000.01516.91
7.1.200.0060.00915.93
7.1.190.0050.00915.52
7.1.180.0100.00315.69
7.1.170.0070.00715.54
7.1.160.0000.01515.55
7.1.150.0060.01015.70
7.1.140.0050.00815.57
7.1.130.0070.00715.61
7.1.120.0080.00515.68
7.1.110.0030.01015.83
7.1.100.0080.00515.49
7.1.90.0080.00915.77
7.1.80.0140.00316.01
7.1.70.0070.01015.86
7.1.60.0230.01533.41
7.1.50.0190.01533.74
7.1.40.0270.01033.55
7.1.30.0240.01333.50
7.1.20.0340.00833.52
7.1.10.0070.01015.63
7.1.00.0030.01015.63

preferences:
56.9 ms | 400 KiB | 5 Q