3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'foo'; $b = false; var_dump($a ==!$b); var_dump($a == (!$b)); var_dump($a !== $b); $a = false; $b = false; var_dump($a ==!$b); var_dump($a == (!$b)); var_dump($a !== $b);

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)
8.3.60.0070.01018.43
8.3.50.0140.00522.81
8.3.40.0080.00818.53
8.3.30.0030.01018.96
8.3.20.0040.00420.22
8.3.10.0050.00321.61
8.3.00.0040.00419.54
8.2.180.0110.00416.38
8.2.170.0100.00722.96
8.2.160.0090.00919.26
8.2.150.0060.00324.18
8.2.140.0060.00324.66
8.2.130.0080.00026.16
8.2.120.0060.00321.04
8.2.110.0030.00622.18
8.2.100.0070.00419.21
8.2.90.0040.00419.28
8.2.80.0030.00619.40
8.2.70.0030.00517.50
8.2.60.0000.00718.05
8.2.50.0040.00418.07
8.2.40.0000.00818.32
8.2.30.0040.00417.92
8.2.20.0040.00417.54
8.2.10.0040.00418.04
8.2.00.0040.00417.71
8.1.280.0110.00725.92
8.1.270.0060.00322.12
8.1.260.0100.00326.35
8.1.250.0100.00728.09
8.1.240.0030.00623.98
8.1.230.0090.00318.88
8.1.220.0000.01017.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0080.00017.50
8.1.180.0080.00019.01
8.1.170.0040.00418.56
8.1.160.0000.00922.13
8.1.150.0000.00718.86
8.1.140.0040.00417.39
8.1.130.0000.00717.81
8.1.120.0030.00317.43
8.1.110.0050.00317.39
8.1.100.0000.00717.40
8.1.90.0000.00717.43
8.1.80.0030.00317.45
8.1.70.0030.00317.38
8.1.60.0050.00317.49
8.1.50.0030.00517.52
8.1.40.0000.00817.51
8.1.30.0000.00817.65
8.1.20.0030.00617.57
8.1.10.0070.00017.39
8.1.00.0050.00217.31
8.0.300.0000.00818.77
8.0.290.0000.00917.05
8.0.280.0030.00318.34
8.0.270.0000.00717.14
8.0.260.0040.00417.23
8.0.250.0000.00716.95
8.0.240.0000.00616.98
8.0.230.0050.00216.82
8.0.220.0030.00316.76
8.0.210.0040.00416.89
8.0.200.0070.00016.86
8.0.190.0000.00716.83
8.0.180.0050.00316.75
8.0.170.0050.00316.89
8.0.160.0000.00716.89
8.0.150.0000.00816.93
8.0.140.0040.00416.83
8.0.130.0000.00613.26
8.0.120.0000.00716.82
8.0.110.0040.00416.86
8.0.100.0000.00716.83
8.0.90.0050.00316.91
8.0.80.0120.00916.92
8.0.70.0040.00416.84
8.0.60.0030.00316.86
8.0.50.0030.00516.77
8.0.30.0150.00617.06
8.0.20.0120.00617.40
8.0.10.0050.00216.79
8.0.00.0140.00216.58
7.4.330.0030.00315.03
7.4.320.0060.00016.57
7.4.300.0000.00716.51
7.4.290.0030.00316.48
7.4.280.0000.00816.59
7.4.270.0040.00416.41
7.4.260.0060.00316.58
7.4.250.0000.00716.54
7.4.240.0030.00416.53
7.4.230.0000.00716.54
7.4.220.0030.01416.52
7.4.210.0090.00516.49
7.4.200.0000.00716.68
7.4.160.0100.00616.45
7.4.150.0060.01117.40
7.4.140.0160.00117.86
7.4.130.0100.00716.47
7.4.120.0110.00916.34
7.4.110.0150.00816.44
7.4.100.0100.01016.50
7.4.90.0070.01016.48
7.4.80.0130.00619.39
7.4.70.0090.00916.51
7.4.60.0140.00316.51
7.4.50.0040.00416.44
7.4.40.0110.00516.61
7.4.30.0050.01316.65
7.4.00.0100.00714.67
7.3.330.0050.00013.16
7.3.320.0000.00513.13
7.3.310.0040.00416.31
7.3.300.0060.00016.27
7.3.290.0070.01016.20
7.3.280.0070.01016.25
7.3.270.0100.00717.40
7.3.260.0080.01116.41
7.3.250.0120.01016.40
7.3.240.0030.01416.22
7.3.230.0060.00916.39
7.3.210.0100.00716.17
7.3.200.0120.00319.39
7.3.190.0070.01016.33
7.3.180.0060.01016.24
7.3.170.0120.00616.41
7.3.160.0100.00616.29
7.3.10.0080.00816.59
7.3.00.0090.00516.56
7.2.330.0170.00516.43
7.2.320.0090.00916.68
7.2.310.0070.01316.60
7.2.300.0170.00016.36
7.2.290.0090.01216.52
7.2.130.0020.01316.73
7.2.120.0080.00516.65
7.2.110.0090.00516.94
7.2.100.0110.00616.71
7.2.90.0040.00816.84
7.2.80.0090.00616.88
7.2.70.0080.00516.91
7.2.60.0020.01116.72
7.2.50.0060.01116.84
7.2.40.0060.00816.87
7.2.30.0080.00816.75
7.2.20.0030.01016.96
7.2.10.0090.00416.71
7.2.00.0010.01117.43
7.1.250.0100.00215.81
7.1.100.0060.00318.20
7.1.70.0030.00317.19
7.1.60.0110.01419.34
7.1.50.0030.01716.91
7.1.00.0000.08022.46
7.0.200.0070.00016.36
7.0.140.0030.05321.98
7.0.60.0130.07719.89
7.0.50.0100.07717.66
7.0.40.0030.05320.39
7.0.30.0330.06720.04
7.0.20.0330.07720.16
7.0.10.0030.07320.14
7.0.00.0100.03320.18
5.6.280.0070.07021.01
5.6.210.0030.04720.50
5.6.200.0100.04318.17
5.6.190.0070.04720.64
5.6.180.0130.05720.45
5.6.170.0200.05320.50
5.6.160.0070.04020.61
5.6.150.0070.08318.15
5.6.140.0070.05018.15
5.6.130.0030.04018.11
5.6.120.0030.06320.99
5.6.110.0100.07721.10
5.6.100.0030.07021.00
5.6.90.0070.07320.97
5.6.80.0100.07720.48
5.5.350.0230.08020.40
5.5.340.0070.08318.00
5.5.330.0070.08720.23
5.5.320.0370.07020.34
5.5.310.0300.03720.13
5.5.300.0000.04017.89
5.5.290.0030.08318.01
5.5.280.0030.04320.79
5.5.270.0170.04720.91
5.5.260.0070.08320.96
5.5.250.0130.06720.67
5.5.240.0070.03320.13
5.4.450.0730.05019.24
5.4.440.0230.06719.22
5.4.430.0030.06319.51
5.4.420.0100.05319.15
5.4.410.0230.04719.54
5.4.400.0130.04719.14
5.4.390.0100.05319.17
5.4.380.0300.05318.77
5.4.370.0270.05318.68
5.4.360.0170.06718.64
5.4.350.0130.03013.70
5.4.340.0070.04313.71
5.4.320.0070.04014.14
5.4.310.0070.04714.18
5.4.300.0170.03714.13
5.4.290.0130.04714.36
5.4.280.0170.02714.04
5.4.270.0100.03714.10
5.4.260.0170.03314.09
5.4.250.0070.04014.06
5.4.240.0070.04014.08
5.4.230.0200.03014.07
5.4.220.0070.04014.03
5.4.210.0170.03314.17
5.4.200.0100.03714.08
5.4.190.0100.04014.00
5.4.180.0070.03714.17
5.4.170.0200.02314.08
5.4.160.0070.03714.03
5.4.150.0070.04014.11
5.4.140.0070.04313.77
5.4.130.0130.03713.92
5.4.120.0130.03713.88
5.4.110.0070.04013.64
5.4.100.0070.04013.65
5.4.90.0100.03713.63
5.4.80.0100.04713.79
5.4.70.0100.04013.64
5.4.60.0030.04013.87
5.4.50.0130.03013.63
5.4.40.0100.03313.66
5.4.30.0070.03313.65
5.4.20.0130.02713.86
5.4.10.0070.03313.86
5.4.00.0030.03713.20
5.3.290.0070.04014.55
5.3.280.0100.03314.48
5.3.270.0100.04314.49
5.3.260.0030.04314.61
5.3.250.0070.04014.63
5.3.240.0070.04014.45
5.3.230.0200.03014.51
5.3.220.0000.05014.46
5.3.210.0100.04314.62
5.3.200.0070.03714.58
5.3.190.0170.03314.59
5.3.180.0030.04014.45
5.3.170.0070.03714.43
5.3.160.0130.03014.59
5.3.150.0100.03314.47
5.3.140.0070.03714.40
5.3.130.0030.04014.47
5.3.120.0070.04014.55
5.3.110.0170.04714.46
5.3.100.0030.05013.88
5.3.90.0100.04713.94
5.3.80.0070.04014.05
5.3.70.0030.04314.03
5.3.60.0100.03313.99
5.3.50.0100.03713.90
5.3.40.0130.03013.97
5.3.30.0030.04013.82
5.3.20.0130.03013.67
5.3.10.0030.04313.52
5.3.00.0070.03713.48
5.2.170.0070.03011.09
5.2.160.0030.03011.22
5.2.150.0070.03311.06
5.2.140.0070.03011.14
5.2.130.0030.03011.18
5.2.120.0030.03011.07
5.2.110.0070.04010.97
5.2.100.0070.03011.03
5.2.90.0030.03711.08
5.2.80.0100.02711.18
5.2.70.0100.03011.02
5.2.60.0070.03310.96
5.2.50.0070.03010.91
5.2.40.0070.03010.92
5.2.30.0030.03010.87
5.2.20.0000.03310.96
5.2.10.0130.02010.81
5.2.00.0070.02710.74
5.1.60.0070.0279.95
5.1.50.0030.03010.03
5.1.40.0000.03010.09
5.1.30.0000.03710.36
5.1.20.0000.03310.34
5.1.10.0130.02710.13
5.1.00.0030.02710.04
5.0.50.0030.0208.56
5.0.40.0000.0238.34
5.0.30.0030.0308.15
5.0.20.0000.0238.17
5.0.10.0030.0278.10
5.0.00.0070.0308.20
4.4.90.0070.0105.84
4.4.80.0070.0105.80
4.4.70.0070.0175.83
4.4.60.0070.0135.75
4.4.50.0100.0075.82
4.4.40.0000.0335.83
4.4.30.0000.0175.86
4.4.20.0030.0205.86
4.4.10.0070.0205.91
4.4.00.0000.0275.87
4.3.110.0030.0135.78
4.3.100.0030.0175.76
4.3.90.0000.0175.74
4.3.80.0030.0235.71
4.3.70.0000.0175.76
4.3.60.0030.0135.72
4.3.50.0030.0175.81
4.3.40.0030.0235.71
4.3.30.0030.0134.52
4.3.20.0000.0174.65
4.3.10.0030.0174.46
4.3.00.0100.0307.29

preferences:
47.85 ms | 401 KiB | 5 Q