3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "\tA\t B \tC \t D "; var_export( [ 'input' => $string, 'space, no flag' => preg_split('~ +~', $string), 'space, flag' => preg_split('~ +~', $string, -1, PREG_SPLIT_NO_EMPTY), 'tab, no flag' => preg_split('~\t+~', $string), 'tab, flag' => preg_split('~\t+~', $string, -1, PREG_SPLIT_NO_EMPTY), 'whitespace, no flag' => preg_split('~\s+~', $string), 'whitespace, flag' => preg_split('~\s+~', $string, -1, PREG_SPLIT_NO_EMPTY), 'tab&space, no flag' => preg_split('~[\t ]+~', $string), 'tab&space, flag' => preg_split('~[\t ]+~', $string, -1, PREG_SPLIT_NO_EMPTY), 'horizontal whitespace, no flag' => preg_split('~\h+~', $string), 'horizontal whitespace, flag' => preg_split('~\h+~', $string, -1, PREG_SPLIT_NO_EMPTY), ] );

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)
8.5.30.0160.00818.03
8.5.20.0210.00718.18
8.5.10.0210.00816.80
8.5.00.0230.00818.46
8.4.180.0230.00922.76
8.4.170.0200.00721.96
8.4.160.0200.01321.95
8.4.150.0180.00516.99
8.4.140.0270.00717.85
8.4.130.0250.00917.78
8.4.120.0220.00719.27
8.4.110.0240.01018.83
8.4.100.0180.01018.34
8.4.90.0240.00718.88
8.4.80.0220.00719.39
8.4.70.0210.01018.04
8.4.60.0240.01018.46
8.4.50.0230.00719.40
8.4.40.0240.00918.65
8.4.30.0270.00819.23
8.4.20.0230.00718.35
8.4.10.0230.00517.65
8.3.300.0260.01020.74
8.3.290.0210.01019.80
8.3.280.0230.00919.44
8.3.270.0230.00916.74
8.3.260.0250.00716.73
8.3.250.0230.00918.79
8.3.240.0220.01116.85
8.3.230.0240.01016.85
8.3.220.0220.00417.90
8.3.210.0210.00816.81
8.3.200.0200.00616.77
8.3.190.0200.00817.11
8.3.180.0220.00917.07
8.3.170.0250.00718.56
8.3.160.0200.01017.57
8.3.150.0210.00617.02
8.3.140.0230.01017.15
8.3.130.0190.00717.69
8.3.120.0200.00817.95
8.3.110.0200.00616.93
8.3.100.0230.00828.97
8.3.90.0270.00921.75
8.3.80.0280.00516.81
8.3.70.0230.00817.79
8.3.60.0250.00916.81
8.3.50.0250.00917.45
8.3.40.0260.00518.44
8.3.30.0200.00818.32
8.3.20.0180.00821.08
8.3.10.0180.00421.43
8.3.00.0130.00822.07
8.2.300.0280.01018.01
8.2.290.0220.00716.70
8.2.280.0180.00916.77
8.2.270.0160.01217.12
8.2.260.0140.00917.67
8.2.250.0190.00517.75
8.2.240.0170.00618.13
8.2.230.0170.00918.84
8.2.220.0190.00627.14
8.2.210.0240.00621.75
8.2.200.0200.00616.90
8.2.190.0200.00616.74
8.2.180.0120.00721.38
8.2.170.0180.00718.54
8.2.160.0220.00420.48
8.2.150.0160.00721.95
8.2.140.0180.00821.33
8.2.130.0170.00522.09
8.2.120.0190.00322.11
8.2.110.0170.00619.54
8.2.100.0180.00518.14
8.2.90.0180.00418.11
8.2.80.0180.00519.34
8.2.70.0130.00917.88
8.2.60.0130.00818.05
8.2.50.0160.00818.04
8.2.40.0150.00818.18
8.2.30.0140.00818.14
8.2.20.0180.00718.03
8.2.10.0190.00218.71
8.2.00.0140.00818.67
8.1.340.0210.00917.70
8.1.330.0190.00916.61
8.1.320.0210.00716.56
8.1.310.0190.00917.56
8.1.300.0180.00916.79
8.1.290.0190.00417.81
8.1.280.0280.00621.33
8.1.270.0150.00721.24
8.1.260.0180.00522.11
8.1.250.0160.00622.98
8.1.240.0160.00720.00
8.1.230.0190.00619.35
8.1.220.0160.00617.81
8.1.210.0150.00718.34
8.1.200.0130.00917.62
8.1.190.0150.00817.57
8.1.180.0170.00617.95
8.1.170.0130.00818.28
8.1.160.0150.00818.42
8.1.150.0160.00518.41
8.1.140.0160.00518.45
8.1.130.0160.00619.17
8.1.120.0120.00917.64
8.1.110.0130.00917.64
8.1.100.0150.00717.61
8.1.90.0180.00417.67
8.1.80.0170.00617.59
8.1.70.0160.00717.54
8.1.60.0170.00717.74
8.1.50.0160.00717.74
8.1.40.0170.00617.65
8.1.30.0180.00717.83
8.1.20.0150.00717.84
8.1.10.0160.00617.78
8.1.00.0190.00417.69
8.0.300.0110.00918.63
8.0.290.0150.00616.89
8.0.280.0140.00717.70
8.0.270.0150.00517.64
8.0.260.0140.00617.84
8.0.250.0140.00616.97
8.0.240.0180.00317.05
8.0.230.0170.00417.18
8.0.220.0150.00617.11
8.0.210.0150.00617.02
8.0.200.0140.00717.07
8.0.190.0170.00617.02
8.0.180.0130.00817.08
8.0.170.0180.00417.03
8.0.160.0150.00717.04
8.0.150.0180.00316.98
8.0.140.0170.00416.95
8.0.130.0160.00515.18
8.0.120.0160.00516.96
8.0.110.0170.00416.98
8.0.100.0140.00717.13
8.0.90.0110.01017.05
8.0.80.0200.01017.04
8.0.70.0180.01117.03
8.0.60.0190.00917.13
8.0.50.0160.01117.06
8.0.30.0210.00817.11
8.0.20.0190.00717.18
8.0.10.0170.01017.19
8.0.00.0190.01117.21
7.4.330.0140.00616.21
7.4.320.0170.00416.82
7.4.300.0150.00516.82
7.4.290.0180.00616.91
7.4.280.0140.00616.91
7.4.270.0150.00616.88
7.4.260.0140.00615.18
7.4.250.0110.00816.73
7.4.240.0100.00716.82
7.4.230.0160.00416.85
7.4.220.0180.00216.77
7.4.210.0160.00816.85
7.4.200.0240.00516.93
7.4.190.0200.01016.76
7.4.180.0200.00616.82
7.4.160.0200.00716.85
7.4.150.0210.00416.86
7.4.140.0180.01016.77
7.4.130.0200.00916.68
7.4.120.0230.00516.71
7.4.110.0190.00716.64
7.4.100.0180.00716.75
7.4.90.0130.01416.73
7.4.80.0200.00516.71
7.4.70.0230.00416.65
7.4.60.0180.00716.69
7.4.50.0180.00916.59
7.4.40.0200.00816.63
7.4.30.0190.00716.72
7.4.20.0180.00616.73
7.4.10.0200.00816.70
7.4.00.0200.00616.66
7.3.330.0140.00516.54
7.3.320.0170.00215.00
7.3.310.0150.00516.49
7.3.300.0130.00716.58
7.3.290.0180.00916.57
7.3.280.0180.00816.55
7.3.270.0240.00516.56
7.3.260.0220.00516.54
7.3.250.0240.00616.52
7.3.240.0140.00916.58
7.3.230.0210.00616.44
7.3.220.0200.00616.52
7.3.210.0190.00516.54
7.3.200.0200.01016.50
7.3.190.0190.00816.55
7.3.180.0150.00916.49
7.3.170.0170.00316.51
7.3.160.0160.00716.49
7.3.150.0170.00916.51
7.3.140.0210.00516.56
7.3.130.0250.00316.46
7.3.120.0180.00816.54
7.3.110.0210.00916.47
7.3.100.0130.01116.47
7.3.90.0210.00916.65
7.3.80.0160.00816.57
7.3.70.0170.00916.63
7.3.60.0180.00816.60
7.3.50.0140.01116.59
7.3.40.0210.00316.60
7.3.30.0210.00616.63
7.3.20.0520.01017.41
7.3.10.0190.00417.26
7.3.00.0180.00917.37

preferences:
31.54 ms | 475 KiB | 5 Q