3v4l.org

run code in 300+ PHP versions simultaneously
<?php function revert($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'); var_dump(preg_match_all('/\w+/', $str, $obtainStrList));

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)
8.3.40.0150.00318.93
8.3.30.0090.00918.88
8.3.20.0000.00819.11
8.3.10.0040.00423.65
8.3.00.0050.00323.70
8.2.170.0100.00722.96
8.2.160.0070.00719.21
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0100.00020.38
8.2.120.0050.00326.35
8.2.110.0030.00621.00
8.2.100.0080.00917.58
8.2.90.0040.00419.08
8.2.80.0080.00017.97
8.2.70.0060.00317.68
8.2.60.0060.00317.68
8.2.50.0060.00318.10
8.2.40.0000.00819.34
8.2.30.0040.00422.36
8.2.20.0000.00718.11
8.2.10.0070.00017.84
8.2.00.0050.00319.21
8.1.270.0080.00022.10
8.1.260.0070.00026.35
8.1.250.0000.00828.09
8.1.240.0000.01121.18
8.1.230.0110.00022.06
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0030.00617.13
8.1.190.0090.00317.22
8.1.180.0000.00818.10
8.1.170.0030.00518.78
8.1.160.0000.00718.71
8.1.150.0050.00218.80
8.1.140.0000.00818.96
8.1.130.0000.00718.91
8.1.120.0000.00717.50
8.1.110.0030.00617.50
8.1.100.0040.00417.43
8.1.90.0050.00317.51
8.1.80.0000.00817.38
8.1.70.0050.00317.39
8.1.60.0030.00617.61
8.1.50.0040.00417.50
8.1.40.0030.00517.54
8.1.30.0060.00617.59
8.1.20.0050.00217.58
8.1.10.0040.00417.54
8.1.00.0000.00817.54
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0000.00718.34
8.0.270.0000.00717.23
8.0.260.0000.00717.16
8.0.250.0030.00317.14
8.0.240.0050.00317.08
8.0.230.0040.00417.08
8.0.220.0050.00216.95
8.0.210.0000.00716.89
8.0.200.0040.00417.04
8.0.190.0040.00417.00
8.0.180.0000.00816.86
8.0.170.0030.00517.02
8.0.160.0040.00417.06
8.0.150.0000.00716.77
8.0.140.0030.00516.93
8.0.130.0000.00613.45
8.0.120.0000.00816.85
8.0.110.0000.00816.88
8.0.100.0000.00716.78
8.0.90.0000.00816.90
8.0.80.0080.01016.95
8.0.70.0000.00816.85
8.0.60.0000.00717.05
8.0.50.0040.00417.01
8.0.30.0150.00417.12
8.0.20.0120.01217.40
8.0.10.0000.00717.00
8.0.00.0130.00616.86
7.4.330.0000.00615.55
7.4.320.0060.00016.61
7.4.300.0040.00416.51
7.4.290.0000.00716.58
7.4.280.0030.00616.64
7.4.270.0030.00316.66
7.4.260.0050.00616.66
7.4.250.0040.00416.67
7.4.240.0030.00316.66
7.4.230.0030.00316.44
7.4.220.0050.00316.50
7.4.210.0100.00816.67
7.4.200.0030.00316.71
7.4.160.0080.00816.59
7.4.140.0140.00617.86
7.4.130.0100.01316.61
7.4.120.0100.01216.60
7.4.110.0070.01016.58
7.4.100.0140.00416.57
7.4.90.0100.00716.47
7.4.80.0120.01219.39
7.4.70.0090.00916.64
7.4.60.0000.01616.47
7.4.50.0030.00616.62
7.4.40.0070.01016.53
7.4.00.0030.01014.81
7.3.330.0050.00013.25
7.3.320.0000.00613.22
7.3.310.0000.00716.25
7.3.300.0030.00316.41
7.3.290.0000.00716.23
7.3.280.0070.01216.46
7.3.260.0090.01016.60
7.3.240.0090.01016.52
7.3.230.0030.01416.34
7.3.210.0090.00916.50
7.3.200.0130.01016.37
7.3.190.0080.00916.56
7.3.180.0090.00916.25
7.3.170.0080.00816.50
7.3.160.0100.00716.54
7.2.330.0110.00716.69
7.2.320.0130.00816.45
7.2.310.0100.00716.60
7.2.300.0060.01216.58
7.2.290.0130.00616.68
7.2.110.1170.00616.59
7.2.80.0080.00816.70
7.2.70.0100.01016.75
7.2.60.0090.01216.61
7.2.50.0110.00816.85
7.2.40.0120.00816.71
7.2.30.0070.01016.55
7.2.20.0130.00316.74
7.2.10.0090.00616.92
7.2.00.0120.00616.66
7.1.200.0000.01115.68
7.1.190.0150.00315.54
7.1.180.0060.01515.80
7.1.170.0030.01515.73
7.1.160.0110.00715.88
7.1.150.0130.00315.73
7.1.140.0060.00915.79
7.1.130.0090.00615.68
7.1.120.0100.00715.75
7.1.110.0080.01315.94
7.1.100.0130.00315.76
7.1.90.0120.00615.73
7.1.80.0070.01315.82
7.1.70.0070.00715.68
7.1.60.0190.02533.68
7.1.50.0320.02733.75
7.1.40.0340.00733.49
7.1.30.0400.00733.61
7.1.20.0290.01933.75
7.1.10.0110.00715.66
7.1.00.0110.00515.72

preferences:
65.04 ms | 400 KiB | 5 Q