3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '0'; $b = 'NULL'; var_dump($a == $b); var_dump(is_null($a)); var_dump(is_null($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)
8.3.60.0070.01316.63
8.3.50.0120.00722.05
8.3.40.0120.00918.63
8.3.30.0070.00718.84
8.3.20.0000.00720.13
8.3.10.0000.00821.77
8.3.00.0040.00419.26
8.2.180.0090.01218.18
8.2.170.0060.00918.83
8.2.160.0170.00322.96
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0040.00419.36
8.2.110.0060.00320.58
8.2.100.0120.00019.36
8.2.90.0000.00819.23
8.2.80.0080.00017.97
8.2.70.0050.00317.38
8.2.60.0060.00317.67
8.2.50.0030.00518.07
8.2.40.0080.00019.75
8.2.30.0040.00418.01
8.2.20.0040.00417.60
8.2.10.0040.00418.09
8.2.00.0040.00417.66
8.1.280.0180.00425.92
8.1.270.0040.00418.71
8.1.260.0080.00026.35
8.1.250.0000.00728.09
8.1.240.0060.00320.94
8.1.230.0090.00317.63
8.1.220.0080.00017.74
8.1.210.0000.00818.77
8.1.200.0030.00617.35
8.1.190.0000.00917.25
8.1.180.0080.00018.10
8.1.170.0030.00520.42
8.1.160.0050.00221.94
8.1.150.0000.00718.92
8.1.140.0040.00417.34
8.1.130.0030.00317.81
8.1.120.0000.00717.48
8.1.110.0070.00017.43
8.1.100.0000.00717.38
8.1.90.0040.00417.48
8.1.80.0050.00317.38
8.1.70.0030.00317.30
8.1.60.0030.00617.45
8.1.50.0040.00417.40
8.1.40.0030.00617.52
8.1.30.0080.00017.64
8.1.20.0060.00317.59
8.1.10.0000.01117.30
8.1.00.0020.00517.25
8.0.300.0000.00718.77
8.0.290.0000.00716.75
8.0.280.0030.00318.42
8.0.270.0030.00317.17
8.0.260.0060.00018.23
8.0.250.0070.00016.74
8.0.240.0020.00516.83
8.0.230.0080.00016.88
8.0.220.0000.00616.71
8.0.210.0030.00316.82
8.0.200.0040.00416.76
8.0.190.0040.00416.88
8.0.180.0030.00516.85
8.0.170.0000.00716.90
8.0.160.0000.00716.86
8.0.150.0000.00716.71
8.0.140.0000.00816.67
8.0.130.0030.00413.19
8.0.120.0030.00516.80
8.0.110.0070.00016.73
8.0.100.0070.00016.64
8.0.90.0000.00816.79
8.0.80.0070.01016.74
8.0.70.0040.00416.81
8.0.60.0080.00016.71
8.0.50.0000.00816.68
8.0.30.0130.01316.88
8.0.20.0090.00917.40
8.0.10.0040.00416.96
8.0.00.0100.00716.69
7.4.330.0030.00315.03
7.4.320.0000.00616.57
7.4.300.0030.00316.39
7.4.290.0070.00016.61
7.4.280.0000.00716.59
7.4.270.0080.00016.38
7.4.260.0050.00216.55
7.4.250.0030.00316.43
7.4.240.0020.00516.62
7.4.230.0070.00016.43
7.4.220.0120.00916.68
7.4.210.0030.01016.52
7.4.200.0030.00316.67
7.4.160.0120.00316.45
7.4.150.0070.01117.40
7.4.140.0070.01317.86
7.4.130.0050.01116.50
7.4.120.0080.01116.50
7.4.110.0080.01116.64
7.4.100.0100.00716.47
7.4.90.0140.00716.34
7.4.80.0060.01419.39
7.4.70.0070.01016.62
7.4.60.0090.00916.42
7.4.50.0000.00716.27
7.4.40.0090.01316.33
7.4.30.0110.00716.56
7.4.00.0090.00914.90
7.3.330.0060.00012.88
7.3.320.0090.00613.18
7.3.310.0000.00716.04
7.3.300.0070.00016.18
7.3.290.0100.00616.23
7.3.280.0110.00616.20
7.3.270.0080.00817.40
7.3.260.0130.01016.48
7.3.250.0090.00916.34
7.3.240.0060.01316.28
7.3.230.0130.01016.39
7.3.210.0120.00616.14
7.3.200.0070.01119.39
7.3.190.0090.00616.44
7.3.180.0100.00716.34
7.3.170.0110.01116.36
7.3.160.0130.00316.14
7.3.120.0060.00614.56
7.3.110.0060.01214.82
7.3.100.0030.01314.96
7.3.90.0110.00414.57
7.3.80.0000.01314.55
7.3.70.0060.01214.72
7.3.60.0000.01714.68
7.3.50.0100.00314.65
7.3.40.0070.01014.81
7.3.30.0060.00614.54
7.3.20.0060.01016.61
7.3.10.0030.01016.61
7.3.00.0000.01416.68
7.2.330.0120.00616.49
7.2.320.0120.00416.53
7.2.310.0030.01316.63
7.2.300.0060.01016.61
7.2.290.0120.00616.59
7.2.250.0030.01714.83
7.2.240.0080.01114.86
7.2.230.0060.00314.84
7.2.220.0090.00614.80
7.2.210.0040.01214.52
7.2.200.0040.01114.72
7.2.190.0100.00315.04
7.2.180.0090.00614.99
7.2.170.0100.00714.90
7.2.00.0030.00918.86
7.1.330.0090.00615.85
7.1.320.0060.00615.78
7.1.310.0060.01015.63
7.1.300.0100.00615.61
7.1.290.0100.00315.67
7.1.280.0060.00615.86
7.1.270.0030.01315.68
7.1.260.0060.00815.41
7.1.100.0000.01118.15
7.1.70.0090.00016.80
7.1.60.0110.01419.50
7.1.50.0110.01116.92
7.1.00.0030.07722.54
7.0.200.0400.00714.62
7.0.140.0130.06322.01
7.0.60.0100.03319.91
7.0.50.0000.04317.80
7.0.40.0100.03720.04
7.0.30.0330.03320.18
7.0.20.0330.07020.16
7.0.10.0300.07720.20
7.0.00.0030.04320.19
5.6.280.0000.07720.80
5.6.210.0100.05020.71
5.6.200.0000.04318.16
5.6.190.0100.08720.48
5.6.180.0230.04020.32
5.6.170.0330.05720.61
5.6.160.0130.07020.54
5.6.150.0130.07318.22
5.6.140.0000.08718.12
5.6.130.0030.08018.21
5.6.120.0000.04721.11
5.6.110.0100.08021.11
5.6.100.0030.07021.01
5.6.90.0000.09320.99
5.6.80.0070.08020.43
5.6.70.0270.06720.34
5.5.350.0200.07320.34
5.5.340.0030.03717.90
5.5.330.0130.05720.28
5.5.320.0070.04720.15
5.5.310.0170.04720.35
5.5.300.0070.06018.00
5.5.290.0100.07318.02
5.5.280.0100.08020.64
5.5.270.0070.06320.67
5.5.260.0130.05020.77
5.5.250.0030.04020.57
5.5.240.0070.04320.25
5.4.450.0300.05319.48
5.4.440.0900.06019.40
5.4.430.0670.05319.10
5.4.420.0970.05019.32
5.4.410.0130.05718.93
5.4.400.1330.05318.61
5.4.390.1300.06018.68
5.4.380.1200.06318.68
5.4.370.1200.06018.52
5.4.360.1230.05318.66
5.4.350.1400.04718.65
5.4.340.1230.05318.70
5.4.320.1530.06018.55
5.4.310.1130.06018.48
5.4.300.1500.07018.52
5.4.290.1300.05318.52
5.4.280.1130.05318.61
5.4.270.1230.06018.61
5.4.260.1400.06018.60
5.4.250.1400.05718.51
5.4.240.1370.05718.50
5.4.230.1200.05018.54
5.4.220.1430.06018.70
5.4.210.1170.05018.76
5.4.200.1030.07016.64
5.4.190.1130.04718.54
5.4.180.1370.06318.77
5.4.170.1300.05018.66
5.4.160.1300.05318.44
5.4.150.1300.05018.61
5.4.140.1270.05316.20
5.4.130.1270.05716.30
5.4.120.1300.05016.32
5.4.110.1270.05316.25
5.4.100.1300.05016.05
5.4.90.1330.05016.00
5.4.80.1300.06716.06
5.4.70.1400.04716.27
5.4.60.1370.04716.24
5.4.50.1100.05316.05
5.4.40.1400.05016.12
5.4.30.1230.05016.24
5.4.20.1070.05016.13
5.4.10.1700.05316.09
5.4.00.1130.05015.71
5.3.290.1170.06314.72
5.3.280.1170.06014.58
5.3.270.1200.05314.59
5.3.260.1100.05714.51
5.3.250.1100.06314.58
5.3.240.0970.06314.57
5.3.230.1130.06714.65
5.3.220.1230.06014.52
5.3.210.1200.05714.51
5.3.200.1170.07014.46
5.3.190.1370.06314.56
5.3.180.1070.05314.51
5.3.170.1200.06014.64
5.3.160.1370.05714.52
5.3.150.1200.06714.60
5.3.140.1400.04014.53
5.3.130.1270.05714.52
5.3.120.1200.05314.49
5.3.110.1030.05314.54
5.3.100.1300.05314.00
5.3.90.1200.06313.93
5.3.80.1200.05713.95
5.3.70.1230.05714.00
5.3.60.1330.05714.09
5.3.50.1300.04713.89
5.3.40.1030.05013.91
5.3.30.0970.05713.87
5.3.20.1230.06313.60
5.3.10.1670.06013.66
5.3.00.1430.06013.61
5.2.170.1100.04011.19
5.2.160.1070.05011.28
5.2.150.1000.05711.07
5.2.140.0930.03711.29
5.2.130.1170.06711.03
5.2.120.1100.04011.13
5.2.110.1000.04311.06
5.2.100.1170.05011.09
5.2.90.1230.05311.23
5.2.80.1200.06711.23
5.2.70.1100.04311.13
5.2.60.1000.04011.18
5.2.50.0970.04011.07
5.2.40.0970.04711.04
5.2.30.1000.04010.88
5.2.20.0830.04010.99
5.2.10.0770.05010.96
5.2.00.0800.05010.68
5.1.60.0670.0379.96
5.1.50.0830.0379.95
5.1.40.0800.0379.99
5.1.30.0970.03010.42
5.1.20.0730.04010.40
5.1.10.0830.04010.08
5.1.00.0730.03710.09
5.0.50.0470.0378.51
5.0.40.0570.0308.42
5.0.30.0430.0538.21
5.0.20.0500.0278.36
5.0.10.0500.0338.20
5.0.00.0430.0478.27
4.4.90.0430.0235.88
4.4.80.0470.0175.86
4.4.70.0470.0205.91
4.4.60.0370.0235.89
4.4.50.0430.0235.89
4.4.40.0470.0375.91
4.4.30.0400.0235.89
4.4.20.0470.0175.93
4.4.10.0500.0175.95
4.4.00.0470.0335.89
4.3.110.0400.0375.85
4.3.100.0400.0275.87
4.3.90.0370.0305.82
4.3.80.0300.0375.78
4.3.70.0370.0305.81
4.3.60.0330.0235.79
4.3.50.0330.0275.78
4.3.40.0430.0335.74
4.3.30.0230.0374.87
4.3.20.0130.0234.87
4.3.10.0270.0274.87
4.3.00.0130.0236.69

preferences:
47.32 ms | 401 KiB | 5 Q