3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = null; print $a ?? 'b'; print "\n"; print $a ?: 'b'; print "\n"; print $c ?? 'a'; print "\n"; print $c ?: 'a'; print "\n"; $b = array('a' => null); print $b['a'] ?? 'd'; print "\n"; print $b['a'] ?: 'd'; print "\n"; print $b['c'] ?? 'e'; print "\n"; print $b['c'] ?: 'e'; print "\n";

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)
8.3.40.0130.00619.32
8.3.30.0120.00518.94
8.3.20.0140.00021.02
8.3.10.0100.00623.38
8.3.00.0080.00822.37
8.2.170.0130.00519.06
8.2.160.0120.00521.24
8.2.150.0120.00222.43
8.2.140.0130.00623.23
8.2.130.0120.00423.70
8.2.120.0110.00521.60
8.2.110.0110.00521.35
8.2.100.0090.01120.15
8.2.90.0120.00720.40
8.2.80.0110.00520.11
8.2.70.0100.00819.85
8.2.60.0100.00820.01
8.2.50.0120.00520.14
8.2.40.0110.00620.08
8.2.30.0090.00720.18
8.2.20.0100.00620.07
8.2.10.0100.00620.16
8.2.00.0100.00419.62
8.1.270.0080.00323.78
8.1.260.0060.00624.35
8.1.250.0050.00625.00
8.1.240.0110.00420.70
8.1.230.0110.00420.72
8.1.220.0080.00419.94
8.1.210.0060.00620.47
8.1.200.0050.00719.72
8.1.190.0050.00518.89
8.1.180.0110.00219.86
8.1.170.0110.00420.02
8.1.160.0070.00420.17
8.1.150.0040.00720.67
8.1.140.0090.00520.37
8.1.130.0080.00619.36
8.1.120.0100.00219.28
8.1.110.0090.00319.36
8.1.100.0050.00618.94
8.1.90.0060.00518.59
8.1.80.0050.00618.73
8.1.70.0060.00618.68
8.1.60.0070.00618.71
8.1.50.0080.00418.65
8.1.40.0080.00418.57
8.1.30.0080.00418.69
8.1.20.0070.00518.76
8.1.10.0080.00518.26
8.1.00.0090.00518.14
8.0.300.0080.00619.80
8.0.290.0110.00719.24
8.0.280.0120.00619.65
8.0.270.0110.00319.27
8.0.260.0120.00519.22
8.0.250.0100.00518.89
8.0.240.0080.00918.88
8.0.230.0090.00418.43
8.0.220.0100.00418.15
8.0.210.0080.00618.13
8.0.200.0090.00318.19
8.0.190.0080.00418.38
8.0.180.0080.00418.41
8.0.170.0070.00518.00
8.0.160.0060.00518.21
8.0.150.0080.00418.14
8.0.140.0080.00417.94
8.0.130.0080.00417.47
8.0.120.0080.00516.97
8.0.110.0080.00516.92
8.0.100.0070.00516.95
8.0.90.0080.00416.93
8.0.80.0080.00516.97
8.0.70.0080.00416.96
8.0.60.0090.00416.97
8.0.50.0080.00416.97
8.0.30.0080.00616.97
8.0.20.0080.00617.04
8.0.10.0090.00617.07
8.0.00.0070.00717.34
7.4.330.0080.00218.05
7.4.320.0160.00218.64
7.4.300.0130.00318.04
7.4.290.0110.00517.75
7.4.280.0110.00317.72
7.4.270.0080.00517.47
7.4.260.0130.00417.50
7.4.250.0100.00416.67
7.4.240.0100.00316.68
7.4.230.0120.00316.58
7.4.220.0080.00516.64
7.4.210.0090.00516.64
7.4.200.0080.00416.66
7.4.190.0090.00516.64
7.4.180.0090.00316.77
7.4.160.0090.00616.70
7.4.150.0100.00616.65
7.4.140.0080.00716.63
7.4.130.0080.00616.44
7.4.120.0080.00616.46
7.4.110.0100.00616.39
7.4.100.0110.00516.46
7.4.90.0090.00616.43
7.4.80.0090.00616.54
7.4.70.0100.00716.44
7.4.60.0100.00616.44
7.4.50.0090.00716.42
7.4.40.0100.00616.45
7.4.30.0100.00616.49
7.4.20.0110.00616.47
7.4.10.0110.00616.38
7.4.00.0090.00716.34
7.3.330.0150.00416.92
7.3.320.0140.00316.38
7.3.310.0120.00516.36
7.3.300.0120.00416.39
7.3.290.0130.00516.43
7.3.280.0120.00516.42
7.3.270.0110.00616.48
7.3.260.0110.00616.41
7.3.250.0120.00616.41
7.3.240.0110.00616.41
7.3.230.0110.00616.42
7.3.220.0120.00616.33
7.3.210.0120.00516.32
7.3.200.0100.00716.40
7.3.190.0110.00516.29
7.3.180.0110.00616.32
7.3.170.0110.00616.34
7.3.160.0110.00616.31
7.3.150.0110.00716.32
7.3.140.0110.00716.33
7.3.130.0110.00716.26
7.3.120.0110.00616.12
7.3.110.0110.00716.13
7.3.100.0090.00816.05
7.3.90.0100.00716.22
7.3.80.0100.00716.08
7.3.70.0100.00716.05
7.3.60.0090.00715.96
7.3.50.0100.00615.90
7.3.40.0100.00715.95
7.3.30.0090.00715.84
7.3.20.0160.00716.32
7.3.10.0160.00616.24
7.3.00.0160.00616.29
7.2.340.0140.00716.40
7.2.330.0130.00716.34
7.2.320.0140.00716.35
7.2.310.0150.00616.36
7.2.300.0140.00816.35
7.2.290.0140.00716.36
7.2.280.0140.00816.34
7.2.270.0160.00616.33
7.2.260.0120.00816.24
7.2.250.0130.00616.23
7.2.240.0130.00616.20
7.2.230.0130.00716.12
7.2.220.0140.00616.14
7.2.210.0110.00816.05
7.2.200.0120.00816.15
7.2.190.0110.00816.02
7.2.180.0110.00815.99
7.2.170.0110.00816.02
7.2.160.0120.00715.96
7.2.150.0190.00616.55
7.2.140.0180.00716.52
7.2.130.0190.00816.53
7.2.120.0270.00616.47
7.2.110.0310.00716.37
7.2.100.0350.00816.28
7.2.90.0340.00916.24
7.2.80.0350.00716.24
7.2.70.0330.00816.34
7.2.60.0330.00816.28
7.2.50.0350.00816.30
7.2.40.0330.00816.33
7.2.30.0340.00716.30
7.2.20.0310.00716.30
7.2.10.0320.00816.31
7.2.00.0270.00716.43
7.1.330.0140.00615.80
7.1.320.0130.00615.74
7.1.310.0150.00615.67
7.1.300.0130.00615.57
7.1.290.0170.00615.55
7.1.280.0140.00615.51
7.1.270.0160.00815.47
7.1.260.0170.00715.45
7.1.250.0190.00615.32
7.1.240.0210.00615.30
7.1.230.0270.00715.25
7.1.220.0370.00715.17
7.1.210.0350.00615.15
7.1.200.0330.00715.15
7.1.190.0360.00815.16
7.1.180.0380.00715.12
7.1.170.0330.00715.15
7.1.160.0350.00715.14
7.1.150.0330.00715.15
7.1.140.0340.00715.13
7.1.130.0330.00715.12
7.1.120.0330.00715.16
7.1.110.0330.00715.14
7.1.100.0340.00715.11
7.1.90.0330.00615.10
7.1.80.0290.00715.11
7.1.70.0290.00715.11
7.1.60.0280.00717.08
7.1.50.0290.00717.10
7.1.40.0280.00817.04
7.1.30.0260.00817.03
7.1.20.0260.00817.05
7.1.10.0280.00715.14
7.1.00.0240.00815.11
7.0.330.0190.00715.01
7.0.320.0210.00714.99
7.0.310.0340.00714.81
7.0.300.0370.00714.80
7.0.290.0320.00614.83
7.0.280.0330.00714.81
7.0.270.0300.00714.83
7.0.260.0280.00714.85
7.0.250.0310.00614.93
7.0.240.0300.00614.94
7.0.230.0290.00714.91
7.0.220.0330.00614.86
7.0.210.0270.00714.89
7.0.200.0270.00714.90
7.0.190.0270.00614.92
7.0.180.0260.00614.90
7.0.170.0270.00614.94
7.0.160.0260.00814.86
7.0.150.0260.00714.87
7.0.140.0250.00614.85
7.0.130.0250.00714.88
7.0.120.0230.00714.87
7.0.110.0250.00714.87
7.0.100.0240.00714.85
7.0.90.0270.00614.81
7.0.80.0240.00714.82
7.0.70.0250.00814.81
7.0.60.0250.00714.82
7.0.50.0260.00714.83
7.0.40.0280.00714.84
7.0.30.0260.00714.84
7.0.20.0250.00714.85
7.0.10.0260.00614.86
7.0.00.0210.00714.83
5.6.400.0120.00715.12
5.6.390.0130.00815.08
5.6.380.0120.00814.95
5.6.370.0130.00814.96
5.6.360.0120.00814.97
5.6.350.0120.00814.97
5.6.340.0120.00814.96
5.6.330.0120.00814.94
5.6.320.0120.00814.98
5.6.310.0120.00814.96
5.6.300.0130.00714.88
5.6.290.0120.00814.96
5.6.280.0110.00814.93
5.6.270.0120.00714.93
5.6.260.0120.00814.91
5.6.250.0120.00814.90
5.6.240.0120.00814.91
5.6.230.0120.00914.96
5.6.220.0120.00814.93
5.6.210.0140.00614.91
5.6.200.0130.00715.02
5.6.190.0120.00814.99
5.6.180.0130.00714.96
5.6.170.0120.00814.92
5.6.160.0130.00714.95
5.6.150.0130.00814.97
5.6.140.0130.00814.94
5.6.130.0120.00814.95
5.6.120.0120.00714.96
5.6.110.0120.00714.89
5.6.100.0130.00714.91
5.6.90.0120.00714.90
5.6.80.0110.00814.85
5.6.70.0120.00714.89
5.6.60.0120.00714.89
5.6.50.0120.00714.85
5.6.40.0110.00814.86
5.6.30.0120.00714.87
5.6.20.0110.00814.84
5.6.10.0120.00814.88
5.6.00.0120.00814.87
5.5.380.0130.00814.44
5.5.370.0120.00814.41
5.5.360.0120.00814.38
5.5.350.0130.00714.40
5.5.340.0130.00714.37
5.5.330.0130.00714.35
5.5.320.0130.00714.33
5.5.310.0140.00714.38
5.5.300.0140.00714.40
5.5.290.0140.00614.39
5.5.280.0120.00814.40
5.5.270.0120.00714.35
5.5.260.0120.00814.36
5.5.250.0130.00714.38
5.5.240.0120.00714.36
5.5.230.0120.00714.39
5.5.220.0120.00714.38
5.5.210.0120.00714.40
5.5.200.0120.00714.33
5.5.190.0120.00714.31
5.5.180.0130.00714.32
5.5.170.0110.00914.67
5.5.160.0120.00714.31
5.5.150.0140.00614.32
5.5.140.0130.00714.25
5.5.130.0120.00814.27
5.5.120.0120.00714.27
5.5.110.0110.00714.26
5.5.100.0120.00714.35
5.5.90.0120.00714.37
5.5.80.0120.00714.36
5.5.70.0120.00814.36
5.5.60.0130.00714.37
5.5.50.0120.00714.34
5.5.40.0120.00714.34
5.5.30.0120.00714.36
5.5.20.0110.00814.36
5.5.10.0120.00714.31
5.5.00.0120.00714.31

preferences:
36.57 ms | 400 KiB | 5 Q