3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['b' => null]; echo $a['b'] ?? 'c';

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)
8.3.70.0180.00416.38
8.3.60.0270.00016.63
8.3.50.0180.00616.41
8.3.40.0140.00318.79
8.3.30.0000.01418.75
8.3.20.0000.00820.11
8.3.10.0030.00521.77
8.3.00.0040.00420.88
8.2.180.0140.00718.16
8.2.170.0100.00322.96
8.2.160.0070.00722.25
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0040.00422.25
8.2.120.0070.00026.35
8.2.110.0090.00020.41
8.2.100.0060.00617.84
8.2.90.0040.00419.35
8.2.80.0000.00818.05
8.2.70.0000.00817.50
8.2.60.0030.00618.03
8.2.50.0060.00318.10
8.2.40.0040.00420.55
8.2.30.0000.00719.18
8.2.20.0000.00818.11
8.2.10.0000.00818.04
8.2.00.0030.00317.95
8.1.280.0100.00725.92
8.1.270.0050.00222.14
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0000.00821.98
8.1.230.0090.00319.17
8.1.220.0060.00317.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0000.00917.10
8.1.180.0040.00418.10
8.1.170.0040.00418.59
8.1.160.0040.00419.02
8.1.150.0040.00420.61
8.1.140.0070.00019.46
8.1.130.0030.00318.70
8.1.120.0050.00517.29
8.1.110.0040.00417.38
8.1.100.0030.00517.29
8.1.90.0070.00017.42
8.1.80.0060.00317.42
8.1.70.0000.00717.39
8.1.60.0000.00717.46
8.1.50.0040.00417.54
8.1.40.0080.00017.51
8.1.30.0020.00517.57
8.1.20.0000.00717.68
8.1.10.0000.00717.53
8.1.00.0000.00817.50
8.0.300.0080.00019.82
8.0.290.0030.00516.75
8.0.280.0030.00318.36
8.0.270.0030.00317.15
8.0.260.0030.00316.73
8.0.250.0080.00017.01
8.0.240.0050.00216.79
8.0.230.0030.00316.87
8.0.220.0040.00416.70
8.0.210.0000.00716.84
8.0.200.0060.00016.89
8.0.190.0070.00416.89
8.0.180.0090.00316.89
8.0.170.0030.00316.82
8.0.160.0040.00416.67
8.0.150.0040.00416.75
8.0.140.0030.00316.67
8.0.130.0020.00513.21
8.0.120.0030.00316.76
8.0.110.0000.00716.67
8.0.100.0040.00416.75
8.0.90.0030.00516.67
8.0.80.0080.00916.77
8.0.70.0000.00716.79
8.0.60.0070.00016.77
8.0.50.0020.00516.69
8.0.30.0110.01017.23
8.0.20.0140.00617.40
8.0.10.0030.00316.77
8.0.00.0100.01016.48
7.4.330.0030.00315.55
7.4.320.0000.00616.44
7.4.300.0030.00316.61
7.4.290.0070.00416.42
7.4.280.0040.00416.55
7.4.270.0030.00316.34
7.4.260.0070.00016.40
7.4.250.0000.00816.39
7.4.240.0000.00816.42
7.4.230.0030.00316.63
7.4.220.0120.00916.49
7.4.210.0040.01216.46
7.4.200.0030.00316.63
7.4.160.0030.01316.43
7.4.150.0280.00317.40
7.4.140.0150.00717.86
7.4.130.0160.00316.48
7.4.120.0100.01116.54
7.4.110.0110.00916.49
7.4.100.0060.01516.38
7.4.90.0070.01116.46
7.4.80.0140.00719.39
7.4.70.0100.00616.50
7.4.60.0100.01016.57
7.4.50.0110.00716.38
7.4.40.0090.00916.44
7.4.30.0000.01616.41
7.4.00.0060.01214.70
7.3.330.0030.00312.94
7.3.320.0030.00313.09
7.3.310.0000.00716.32
7.3.300.0000.00716.09
7.3.290.0050.00216.21
7.3.280.0070.00916.20
7.3.270.0120.00917.40
7.3.260.0140.00316.37
7.3.250.0090.00916.28
7.3.240.0100.01016.50
7.3.230.0030.01516.48
7.3.210.0080.00816.55
7.3.200.0070.01016.55
7.3.190.0070.01016.53
7.3.180.0090.00616.21
7.3.170.0030.01316.28
7.3.160.0060.01216.39
7.3.00.0000.01116.50
7.2.330.0110.00616.63
7.2.320.0070.01416.45
7.2.310.0080.00816.57
7.2.300.0110.00716.48
7.2.290.0080.00816.56
7.2.130.0110.00416.79
7.2.120.0090.00616.86
7.2.110.0070.00716.86
7.2.100.0000.01416.77
7.2.90.0390.00315.65
7.2.80.0740.00815.59
7.2.70.0480.00515.73
7.2.60.0100.00815.92
7.2.50.0100.00615.94
7.2.40.0190.00515.85
7.2.30.0540.00815.83
7.2.20.0080.00615.88
7.2.10.0090.00515.87
7.2.00.0160.00615.77
7.1.250.0040.00815.59
7.1.240.0040.00415.38
7.1.230.0070.00315.54
7.1.220.0100.00315.75
7.1.210.0080.00514.56
7.1.200.0060.00914.42
7.1.190.0710.01114.74
7.1.180.0290.00314.59
7.1.170.0110.00214.62
7.1.160.0190.00514.56
7.1.150.0470.00614.56
7.1.140.0030.00914.63
7.1.130.0220.00514.76
7.1.120.0080.00414.65
7.1.110.0610.00914.68
7.1.100.0690.00714.81
7.1.90.0820.00614.61
7.1.80.0060.00914.92
7.1.70.0140.00914.72
7.1.60.0410.00823.60
7.1.50.0200.00823.59
7.1.40.0620.00823.67
7.1.30.0180.00723.78
7.1.20.0110.01123.76
7.1.10.0100.00714.64
7.1.00.0120.00614.83
7.0.330.0100.00315.20
7.0.320.0060.00715.31
7.0.310.0540.00414.36
7.0.300.0130.00514.16
7.0.290.0170.00814.45
7.0.280.0670.00814.26
7.0.270.0790.00814.28
7.0.260.0070.00614.32
7.0.250.0240.00614.38
7.0.240.0360.00514.37
7.0.230.0570.00614.54
7.0.220.0290.00514.20
7.0.210.0400.00914.34
7.0.200.0340.00514.38
7.0.190.0620.00514.46
7.0.180.0570.00814.17
7.0.170.0600.00414.36
7.0.160.0050.00714.30
7.0.150.0240.00914.32
7.0.140.0130.00914.30
7.0.130.0350.00514.29
7.0.120.0050.00814.35
7.0.110.0050.00914.37
7.0.100.0020.01214.30
7.0.90.0470.00614.31
7.0.80.0530.00214.29
7.0.70.0510.00614.36
7.0.60.0520.00914.21
7.0.50.0470.00514.38
7.0.40.0870.00813.47
7.0.30.0580.00213.42
7.0.20.0210.01113.50
7.0.10.0130.00213.35
7.0.00.0230.00713.47
5.6.380.0120.00314.11

preferences:
35.61 ms | 401 KiB | 5 Q