3v4l.org

run code in 300+ PHP versions simultaneously
<?php $value = '3.5'; if ($value != '') { $css_class = substr($value, 0, 1) . substr($value, 2, 1); } echo $css_class;

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)
8.3.60.0110.00416.63
8.3.50.0000.01416.48
8.3.40.0040.01118.84
8.3.30.0060.00918.45
8.3.20.0070.00020.04
8.3.10.0070.00021.86
8.3.00.0060.00319.56
8.2.180.0100.00716.38
8.2.170.0150.00322.96
8.2.160.0070.00719.08
8.2.150.0050.00224.18
8.2.140.0040.00424.66
8.2.130.0000.00920.90
8.2.120.0000.00726.35
8.2.110.0050.00522.11
8.2.100.0090.00317.63
8.2.90.0080.00019.08
8.2.80.0080.00017.97
8.2.70.0050.00517.50
8.2.60.0040.00417.80
8.2.50.0000.00718.10
8.2.40.0000.00820.61
8.2.30.0000.00819.31
8.2.20.0000.00718.03
8.2.10.0000.00818.04
8.2.00.0000.00818.09
8.1.280.0120.00925.92
8.1.270.0040.00423.92
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00323.92
8.1.230.0070.00422.02
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0040.00417.23
8.1.190.0000.00817.00
8.1.180.0090.00018.10
8.1.170.0080.00018.64
8.1.160.0000.00719.03
8.1.150.0050.00320.67
8.1.140.0070.00019.48
8.1.130.0000.00718.84
8.1.120.0030.00317.37
8.1.110.0080.00017.46
8.1.100.0000.00717.37
8.1.90.0000.00717.53
8.1.80.0030.00317.49
8.1.70.0000.00817.41
8.1.60.0080.00017.48
8.1.50.0000.00817.42
8.1.40.0040.00717.39
8.1.30.0000.00817.65
8.1.20.0040.00417.64
8.1.10.0040.00417.56
8.1.00.0050.00217.42
8.0.300.0040.00418.77
8.0.290.0050.00216.63
8.0.280.0060.00018.30
8.0.270.0030.00317.21
8.0.260.0000.00616.80
8.0.250.0030.00317.00
8.0.240.0000.00717.03
8.0.230.0000.00716.97
8.0.220.0090.00016.73
8.0.210.0070.00016.91
8.0.200.0000.00616.95
8.0.190.0000.00816.97
8.0.180.0000.00716.86
8.0.170.0040.00416.91
8.0.160.0070.00016.93
8.0.150.0030.00716.73
8.0.140.0040.00416.76
8.0.130.0030.00513.29
8.0.120.0000.00816.82
8.0.110.0040.00416.75
8.0.100.0000.00716.93
8.0.90.0040.00416.96
8.0.80.0030.01316.89
8.0.70.0070.00016.95
8.0.60.0000.00716.78
8.0.50.0000.00816.91
8.0.30.0110.00616.95
8.0.20.0100.01017.40
8.0.10.0000.00816.83
8.0.00.0100.00716.74
7.4.330.0000.00615.55
7.4.320.0030.00316.58
7.4.300.0030.00316.41
7.4.290.0000.00716.50
7.4.280.0070.00016.50
7.4.270.0000.00716.43
7.4.260.0030.00316.46
7.4.250.0000.00716.48
7.4.240.0040.00316.52
7.4.230.0070.00016.63
7.4.220.0120.01216.55
7.4.210.0030.01316.70
7.4.200.0030.00416.41
7.4.160.0080.00816.36
7.4.150.0100.00717.40
7.4.140.0150.00517.86
7.4.130.0070.01616.51
7.4.120.0100.01116.49
7.4.110.0150.00416.54
7.4.100.0090.00916.59
7.4.90.0100.00716.43
7.4.80.0110.00719.39
7.4.70.0070.01016.40
7.4.60.0060.01016.49
7.4.50.0060.01016.55
7.4.40.0100.00716.59
7.4.30.0070.01016.36
7.4.00.0070.00714.94
7.3.330.0030.00313.25
7.3.320.0050.00013.11
7.3.310.0000.00716.11
7.3.300.0000.00716.13
7.3.290.0070.00716.26
7.3.280.0070.00816.28
7.3.270.0060.01217.40
7.3.260.0130.00416.29
7.3.250.0090.01116.30
7.3.240.0110.00616.24
7.3.230.0070.01116.28
7.3.210.0060.01016.39
7.3.200.0130.00316.55
7.3.190.0100.00616.30
7.3.180.0080.00816.37
7.3.170.0130.00616.43
7.3.160.0090.01416.59
7.2.330.0100.00716.70
7.2.320.0100.01316.44
7.2.310.0080.00816.38
7.2.300.0130.00316.82
7.2.290.0090.00916.66
7.2.60.0030.01016.93
7.2.00.0030.01319.50
7.1.200.0040.01115.43
7.1.100.0070.00718.30
7.1.70.0030.00917.34
7.1.60.0170.01035.05
7.1.50.0240.00334.97
7.1.40.0140.01434.32
7.1.30.0080.02234.40
7.1.20.0130.02334.49
7.1.10.0100.00716.73
7.1.00.0060.00716.61
7.0.200.0000.01316.53
7.0.190.0000.01316.86
7.0.180.0070.01016.40
7.0.170.0070.01016.18
7.0.160.0000.01716.27
7.0.150.0000.01616.13
7.0.140.0060.00816.29
7.0.130.0080.01216.46
7.0.120.0100.00916.40
7.0.110.0030.01716.43
7.0.100.0060.01416.35
7.0.90.0000.01816.54
7.0.80.0030.01316.46
7.0.70.0060.00916.50
7.0.60.0030.01416.02
7.0.50.0100.00616.41
7.0.40.0080.00916.47
7.0.30.0000.01616.42
7.0.20.0080.01316.63
7.0.10.0110.01016.36
7.0.00.0040.01116.49

preferences:
51.76 ms | 401 KiB | 5 Q