3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(is_string(''), is_string(' ')); # true true //$v = ' '; //$v[] = 1; $v = ''; $v[] = 1;

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)
8.3.60.0090.01218.43
8.3.50.0120.00521.27
8.3.40.0080.00818.88
8.3.30.0170.00020.25
8.3.20.0050.00318.91
8.3.10.0080.00021.05
8.3.00.0040.00419.68
8.2.180.0170.00316.88
8.2.170.0000.01622.96
8.2.160.0110.00320.37
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0090.00026.16
8.2.120.0070.00019.83
8.2.110.0070.00419.14
8.2.100.0070.00417.61
8.2.90.0040.00419.22
8.2.80.0080.00019.40
8.2.70.0030.00617.50
8.2.60.0060.00318.05
8.2.50.0080.00018.07
8.2.40.0050.00319.64
8.2.30.0040.00421.19
8.2.20.0070.00017.70
8.2.10.0050.00317.71
8.2.00.0000.00717.61
8.1.280.0120.00325.92
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0030.00622.54
8.1.230.0080.00320.85
8.1.220.0000.00918.77
8.1.210.0000.01018.81
8.1.200.0030.00717.35
8.1.190.0050.00317.53
8.1.180.0040.00418.10
8.1.170.0000.00818.51
8.1.160.0040.00418.82
8.1.150.0030.00518.45
8.1.140.0000.00817.30
8.1.130.0030.00317.73
8.1.120.0070.00317.44
8.1.110.0000.00717.41
8.1.100.0030.00417.40
8.1.90.0000.00717.39
8.1.80.0030.00517.46
8.1.70.0070.00017.35
8.1.60.0030.00617.54
8.1.50.0030.00517.44
8.1.40.0000.00917.41
8.1.30.0050.00317.54
8.1.20.0040.00417.63
8.1.10.0050.00217.55
8.1.00.0000.00817.47
8.0.300.0040.00419.97
8.0.290.0040.00416.92
8.0.280.0000.00718.28
8.0.270.0030.00317.23
8.0.260.0040.00416.78
8.0.250.0050.00217.00
8.0.240.0080.00516.95
8.0.230.0040.00416.83
8.0.220.0030.00316.84
8.0.210.0090.00016.79
8.0.200.0000.00616.81
8.0.190.0040.00416.85
8.0.180.0080.00016.92
8.0.170.0000.00716.88
8.0.160.0040.00416.90
8.0.150.0080.00016.80
8.0.140.0030.00516.77
8.0.130.0000.00513.32
8.0.120.0040.00416.88
8.0.110.0070.00016.86
8.0.100.0000.00716.70
8.0.90.0040.00416.79
8.0.80.0090.00816.90
8.0.70.0040.00416.75
8.0.60.0040.00416.68
8.0.50.0050.00216.91
8.0.30.0120.00816.86
8.0.20.0060.01617.40
8.0.10.0070.00017.03
8.0.00.0100.00816.71
7.4.330.0060.00016.76
7.4.320.0040.00416.45
7.4.300.0070.00016.61
7.4.290.0040.00416.43
7.4.280.0000.00816.38
7.4.270.0070.00016.43
7.4.260.0000.00513.25
7.4.250.0000.00716.45
7.4.240.0030.00316.63
7.4.230.0030.00316.71
7.4.220.0150.00916.48
7.4.210.0090.00816.55
7.4.200.0070.00016.61
7.4.190.0080.00016.66
7.4.160.0110.00616.32
7.4.150.0100.00717.40
7.4.140.0070.01017.86
7.4.130.0090.00916.56
7.4.120.0100.01016.51
7.4.110.0100.00716.38
7.4.100.0100.00716.54
7.4.90.0130.00616.63
7.4.80.0080.01019.39
7.4.70.0030.01416.42
7.4.60.0160.00016.53
7.4.50.0050.00316.43
7.4.40.0050.00822.77
7.4.30.0060.01516.41
7.4.00.0040.01214.87
7.3.330.0000.00513.05
7.3.320.0020.00513.11
7.3.310.0040.00416.32
7.3.300.0000.00716.25
7.3.290.0040.01516.29
7.3.280.0100.00716.33
7.3.270.0130.00617.40
7.3.260.0090.01118.24
7.3.250.0120.00716.40
7.3.240.0070.01016.53
7.3.230.0080.00816.54
7.3.210.0030.01316.55
7.3.200.0070.01719.39
7.3.190.0170.00016.51
7.3.180.0050.01116.29
7.3.170.0130.01016.27
7.3.160.0090.00616.25
7.3.120.0130.00314.84
7.2.330.0040.01316.52
7.2.320.0090.01216.55
7.2.310.0000.02216.41
7.2.300.0090.00616.46
7.2.290.0100.01316.42
7.2.80.0070.00616.50
7.2.60.0030.01016.80
7.2.00.0040.01119.53
7.1.200.0060.00615.82
7.1.100.0000.01117.87
7.1.70.0040.00417.12
7.1.60.0100.01419.24
7.1.50.0070.01416.82
7.1.00.0030.03322.45
7.0.200.0000.00916.80
7.0.140.0130.06322.08
7.0.80.0200.07719.93
7.0.70.0130.07719.89
7.0.60.0170.04719.85
7.0.50.0070.04320.30
7.0.40.0070.06320.11
7.0.30.0100.04020.00
7.0.20.0100.04019.96
7.0.10.0130.03320.08
7.0.00.0030.05020.09
5.6.280.0070.07020.90
5.6.230.0070.08320.62
5.6.220.0070.08320.52
5.6.210.0070.08320.60
5.6.200.0100.05721.10
5.6.190.0100.05721.13
5.6.180.0070.04021.02
5.6.170.0030.07321.03
5.6.160.0030.04320.95
5.6.150.0130.03321.07
5.6.140.0070.04721.05
5.6.130.0070.06721.09
5.6.120.0100.04721.09
5.6.110.0070.04321.02
5.6.100.0070.05020.98
5.6.90.0030.04321.05
5.6.80.0100.03320.49
5.6.70.0030.04320.43
5.6.60.0070.04720.49
5.6.50.0130.03320.54
5.6.40.0070.04720.46
5.6.30.0070.04320.41
5.6.20.0000.04320.43
5.6.10.0030.04020.48
5.6.00.0130.03020.36
5.5.370.0130.06720.39
5.5.360.0170.07320.55
5.5.350.0070.06720.33
5.5.340.0100.04320.73
5.5.330.0100.07320.77
5.5.320.0000.04720.88
5.5.310.0000.04720.90
5.5.300.0000.04720.72
5.5.290.0070.04320.87
5.5.280.0130.03320.89
5.5.270.0030.04320.88
5.5.260.0030.04320.76
5.5.250.0130.03720.58
5.5.240.0030.04320.15
5.5.230.0000.05020.20
5.5.220.0130.03020.09
5.5.210.0100.06320.20
5.5.200.0070.03720.22
5.5.190.0030.04320.29
5.5.180.0100.07320.23
5.5.160.0070.06320.14
5.5.150.0100.04019.98
5.5.140.0030.04020.07
5.5.130.0030.05320.09
5.5.120.0030.04020.22
5.5.110.0000.04320.20
5.5.100.0070.03719.95
5.5.90.0100.03320.15
5.5.80.0070.03720.06
5.5.70.0100.04019.95
5.5.60.0070.04319.95
5.5.50.0100.07320.05
5.5.40.0130.06320.05
5.5.30.0070.08320.02
5.5.20.0030.05019.95
5.5.10.0030.08320.07
5.5.00.0030.04719.96
5.4.450.0100.03719.31
5.4.440.0100.03319.31
5.4.430.0030.04019.38
5.4.420.0030.04019.52
5.4.410.0000.06318.98
5.4.400.0000.04018.98
5.4.390.0030.04719.00
5.4.380.0070.03718.95
5.4.370.0100.04719.04
5.4.360.0070.04019.13
5.4.350.0000.04018.96
5.4.340.0000.04319.14
5.4.320.0030.04019.14
5.4.310.0030.04018.95
5.4.300.0030.05318.95
5.4.290.0070.03718.78
5.4.280.0100.03719.07
5.4.270.0070.04719.12
5.4.260.0030.04019.11
5.4.250.0030.04018.80
5.4.240.0070.03319.09
5.4.230.0030.07018.98
5.4.220.0100.07019.13
5.4.210.0030.06019.05
5.4.200.0030.07318.77
5.4.190.0030.04718.93
5.4.180.0170.06019.02
5.4.170.0100.07018.79
5.4.160.0100.07018.92
5.4.150.0070.07318.87
5.4.140.0100.07016.13
5.4.130.0100.07016.36
5.4.120.0070.07316.27
5.4.110.0130.04716.25
5.4.100.0100.07316.31
5.4.90.0130.06716.40
5.4.80.0030.07716.33
5.4.70.0070.07016.18
5.4.60.0130.06016.20
5.4.50.0030.08316.18
5.4.40.0100.07316.41
5.4.30.0070.07316.31
5.4.20.0170.06316.20
5.4.10.0030.06016.35
5.4.00.0100.07016.12
5.3.290.0070.03316.12
5.3.280.0070.03716.12
5.3.270.0070.05316.12
5.3.260.0170.06016.12
5.3.250.0070.05716.12
5.3.240.0070.07016.12
5.3.230.0070.07016.12
5.3.220.0170.04716.12
5.3.210.0070.06316.12
5.3.200.0030.03716.12
5.3.190.0200.05716.12
5.3.180.0030.08016.12
5.3.170.0000.06316.12
5.3.160.0070.07716.12
5.3.150.0130.04716.12
5.3.140.0100.07016.12
5.3.130.0030.08316.12
5.3.120.0030.08016.12
5.3.110.0030.06016.12
5.3.100.0100.07016.12
5.3.90.0100.07016.12
5.3.80.0070.07316.12
5.3.70.0030.07716.12
5.3.60.0030.07316.12
5.3.50.0070.07316.12
5.3.40.0100.05016.12
5.3.30.0100.07016.12
5.3.20.0100.06016.12
5.3.10.0170.06316.12
5.3.00.0070.04716.12
5.2.170.0030.06716.12
5.2.160.0100.04316.12
5.2.150.0070.06016.12
5.2.140.0030.06716.12
5.2.130.0000.06316.12
5.2.120.0100.05716.12
5.2.110.0070.03316.12
5.2.100.0030.04016.12
5.2.90.0130.05316.12
5.2.80.0000.05016.12
5.2.70.0130.05016.12
5.2.60.0030.06316.12
5.2.50.0070.06016.12
5.2.40.0030.06016.12
5.2.30.0070.05716.12
5.2.20.0000.06316.12
5.2.10.0000.06316.12
5.2.00.0100.05316.12
5.1.60.0130.04716.12
5.1.50.0070.03316.12
5.1.40.0000.05716.12
5.1.30.0170.04716.12
5.1.20.0070.05316.12
5.1.10.0030.06016.12
5.1.00.0100.04316.12
5.0.50.0100.03716.12
5.0.40.0070.04316.12
5.0.30.0030.06016.12
5.0.20.0000.04716.12
5.0.10.0030.04016.12
5.0.00.0030.05716.12
4.4.90.0000.03716.12
4.4.80.0070.03016.12
4.4.70.0000.03716.12
4.4.60.0000.03716.12
4.4.50.0070.03016.12
4.4.40.0000.03716.12
4.4.30.0070.03016.12
4.4.20.0030.03316.12
4.4.10.0000.03316.12
4.4.00.0070.05316.12
4.3.110.0000.03716.12
4.3.100.0030.03016.12
4.3.90.0030.03016.12
4.3.80.0070.04716.12
4.3.70.0000.03716.12
4.3.60.0030.03016.12
4.3.50.0000.03316.12
4.3.40.0030.05316.12
4.3.30.0000.03016.12
4.3.20.0030.03316.12
4.3.10.0070.02316.12
4.3.00.0000.03316.12

preferences:
46.26 ms | 401 KiB | 5 Q