3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = null; if (!is_null($b)) echo "$a is not null";

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)
8.3.60.0110.00316.50
8.3.50.0100.01022.01
8.3.40.0190.00418.80
8.3.30.0100.00718.84
8.3.20.0040.00420.21
8.3.10.0080.00023.70
8.3.00.0040.00421.02
8.2.180.0070.00716.63
8.2.170.0070.00722.96
8.2.160.0070.00720.41
8.2.150.0090.00024.18
8.2.140.0000.00724.66
8.2.130.0070.00026.16
8.2.120.0040.00420.73
8.2.110.0070.00419.33
8.2.100.0040.00817.84
8.2.90.0080.00019.23
8.2.80.0080.00017.97
8.2.70.0030.00617.75
8.2.60.0040.00417.93
8.2.50.0030.00518.10
8.2.40.0080.00020.00
8.2.30.0000.00818.22
8.2.20.0060.00317.84
8.2.10.0040.00417.93
8.2.00.0030.00517.66
8.1.280.0120.00625.92
8.1.270.0050.00323.77
8.1.260.0090.00026.35
8.1.250.0000.00728.09
8.1.240.0090.00022.25
8.1.230.0110.00017.64
8.1.220.0030.00617.74
8.1.210.0030.00518.77
8.1.200.0060.00317.22
8.1.190.0000.00817.23
8.1.180.0080.00018.10
8.1.170.0050.00318.58
8.1.160.0030.00622.01
8.1.150.0000.00720.36
8.1.140.0040.00417.48
8.1.130.0030.00317.76
8.1.120.0070.00017.45
8.1.110.0000.00717.40
8.1.100.0080.00017.48
8.1.90.0050.00217.32
8.1.80.0000.00717.43
8.1.70.0070.00017.41
8.1.60.0040.00417.46
8.1.50.0000.00717.53
8.1.40.0040.00417.51
8.1.30.0050.00317.53
8.1.20.0040.00417.53
8.1.10.0050.00317.43
8.1.00.0050.00317.26
8.0.300.0050.00318.77
8.0.290.0000.00716.88
8.0.280.0030.00318.42
8.0.270.0040.00417.30
8.0.260.0030.00317.24
8.0.250.0000.00617.07
8.0.240.0030.00316.89
8.0.230.0040.00416.98
8.0.220.0030.00316.93
8.0.210.0070.00016.90
8.0.200.0000.00617.00
8.0.190.0000.00716.90
8.0.180.0040.00416.96
8.0.170.0030.00517.02
8.0.160.0000.00716.82
8.0.150.0030.00316.86
8.0.140.0000.00816.96
8.0.130.0030.00313.38
8.0.120.0090.00016.84
8.0.110.0040.00416.87
8.0.100.0000.00816.82
8.0.90.0000.00816.77
8.0.80.0070.00716.89
8.0.70.0040.00417.00
8.0.60.0030.00416.84
8.0.50.0000.00816.99
8.0.30.0090.00917.25
8.0.20.0120.00917.40
8.0.10.0070.00017.16
8.0.00.0100.01116.85
7.4.330.0000.00515.00
7.4.320.0000.00616.58
7.4.300.0000.00616.41
7.4.290.0000.00716.52
7.4.280.0060.00316.50
7.4.270.0030.00316.60
7.4.260.0030.00316.45
7.4.250.0000.00716.43
7.4.240.0000.00716.52
7.4.230.0030.00316.63
7.4.220.0120.00916.53
7.4.210.0070.01316.55
7.4.200.0060.00016.29
7.4.190.0030.00316.41
7.4.160.0090.01516.49
7.4.150.0060.01217.40
7.4.140.0080.01117.86
7.4.130.0110.00716.52
7.4.120.0100.00616.53
7.4.110.0100.01316.56
7.4.100.0150.00316.35
7.4.90.0030.01316.53
7.4.80.0030.01319.39
7.4.70.0060.00916.51
7.4.60.0060.01016.50
7.4.50.0000.00816.52
7.4.40.0100.00716.63
7.4.30.0130.00416.57
7.4.00.0030.01414.91
7.3.330.0000.00512.94
7.3.320.0050.00013.11
7.3.310.0050.00316.33
7.3.300.0030.00516.10
7.3.290.0100.01016.14
7.3.280.0100.00916.17
7.3.270.0130.00317.40
7.3.260.0060.01316.19
7.3.250.0110.00616.29
7.3.240.0160.00016.42
7.3.230.0080.01516.39
7.3.210.0100.00716.48
7.3.200.0130.00419.39
7.3.190.0070.01016.30
7.3.180.0150.00016.16
7.3.170.0030.01216.38
7.3.160.0030.01316.47
7.3.120.0080.00914.68
7.3.110.0030.01314.57
7.3.100.0040.01114.37
7.3.90.0040.01114.59
7.3.80.0040.01414.32
7.3.70.0060.00614.74
7.3.60.0090.00614.84
7.3.50.0070.00314.79
7.3.40.0070.00714.61
7.3.30.0030.01414.82
7.3.20.0040.01116.67
7.3.10.0030.01016.49
7.3.00.0040.00816.33
7.2.330.0120.00616.61
7.2.320.0060.00916.30
7.2.310.0120.00616.36
7.2.300.0100.00616.36
7.2.290.0100.00716.39
7.2.250.0040.01514.70
7.2.240.0080.00814.97
7.2.230.0070.01015.08
7.2.220.0050.00515.11
7.2.210.0030.00715.18
7.2.200.0060.01215.06
7.2.190.0030.00914.86
7.2.180.0070.00714.70
7.2.170.0070.01014.97
7.2.130.0070.00816.87
7.2.120.0060.00616.65
7.2.110.0060.00816.77
7.2.100.0070.00716.84
7.2.90.0050.00816.70
7.2.80.0020.00716.87
7.2.70.0080.00516.76
7.2.60.0040.01116.76
7.2.50.0100.00516.67
7.2.40.0060.00816.81
7.2.30.0050.00816.80
7.2.20.0020.01116.82
7.2.10.0060.00616.64
7.2.00.0100.00617.51
7.1.330.0100.00615.53
7.1.320.0030.00615.70
7.1.310.0030.01015.47
7.1.300.0110.00015.66
7.1.290.0000.01215.64
7.1.280.0040.01215.62
7.1.270.0040.00815.46
7.1.260.0060.00915.79
7.1.250.0030.00815.66
7.1.100.0070.00317.86
7.1.70.0080.00016.90
7.1.60.0110.01419.70
7.1.50.0100.01616.69
7.1.00.0000.07722.44
7.0.200.0040.00416.76
7.0.140.0070.06722.09
7.0.60.0070.06019.89
7.0.50.0070.06317.83
7.0.40.0100.07319.98
7.0.30.0270.04020.34
7.0.20.0130.05020.16
7.0.10.0000.08720.33
7.0.00.0000.04320.12
5.6.280.0000.07720.98
5.6.210.0170.08020.62
5.6.200.0100.08318.20
5.6.190.0070.04020.56
5.6.180.0300.04320.27
5.6.170.0270.04720.50
5.6.160.0100.04020.52
5.6.150.0100.07018.21
5.6.140.0030.04318.15
5.6.130.0130.06718.19
5.6.120.0100.07321.13
5.6.110.0070.04321.03
5.6.100.0100.05320.97
5.6.90.0100.06720.97
5.6.80.0070.06720.39
5.5.350.0070.07320.45
5.5.340.0070.04317.91
5.5.330.0000.04320.14
5.5.320.0370.08020.51
5.5.310.0370.07020.12
5.5.300.0030.04017.92
5.5.290.0030.05018.01
5.5.280.0000.04720.86
5.5.270.0070.04020.71
5.5.260.0130.06020.85
5.5.250.0070.05720.69
5.5.240.3430.04320.34
5.4.450.0000.04319.23
5.4.440.0000.04319.11
5.4.430.0030.03719.38
5.4.420.0000.03719.54
5.4.410.0000.03719.41
5.4.400.0000.07718.79
5.4.390.0030.07719.24
5.4.380.0170.05719.11
5.4.370.0100.05719.08
5.4.360.0030.08019.13
5.4.350.0070.05019.16
5.4.340.0030.07718.81
5.4.320.0100.04019.25
5.4.310.0070.07019.08
5.4.300.0070.07019.25
5.4.290.0030.05718.93
5.4.280.0030.05019.16
5.4.270.0130.06019.24
5.4.260.0000.04719.19
5.4.250.0230.05719.25
5.4.240.0000.08319.13
5.4.230.0030.09019.24
5.4.220.0030.06719.13
5.4.210.0030.06018.95
5.4.200.0070.07719.21
5.4.190.0030.07018.87
5.4.180.0100.06319.15
5.4.170.0030.07018.78
5.4.160.0070.05719.25
5.4.150.0170.07019.06
5.4.140.0030.07716.25
5.4.130.0000.06716.43
5.4.120.0070.06016.54
5.4.110.0030.08016.48
5.4.100.0030.05716.21
5.4.90.0000.08016.39
5.4.80.0030.05316.37
5.4.70.0030.03316.42
5.4.60.0030.03316.47
5.4.50.0100.05316.46
5.4.40.0070.06716.36
5.4.30.0030.06716.43
5.4.20.0030.07016.20
5.4.10.0000.07716.46
5.4.00.0030.05715.89
5.3.290.0000.07314.50
5.3.280.0070.07714.44
5.3.270.0030.06714.58
5.3.260.0070.06714.66
5.3.250.0070.06714.66
5.3.240.0030.07314.44
5.3.230.0070.07014.50
5.3.220.0000.05714.65
5.3.210.0100.06714.65
5.3.200.0130.05314.51
5.3.190.0030.07014.41
5.3.180.0070.04714.42
5.3.170.0030.05714.60
5.3.160.0030.03714.43
5.3.150.0070.07714.60
5.3.140.0030.06014.50
5.3.130.0070.06714.51
5.3.120.0070.07314.41
5.3.110.0100.07314.53
5.3.100.0000.07313.98
5.3.90.0030.06313.89
5.3.80.0030.05313.86
5.3.70.0030.05013.94
5.3.60.0030.04713.95
5.3.50.0030.04313.85
5.3.40.0070.07013.82
5.3.30.0000.05713.81
5.3.20.0030.04013.67
5.3.10.0100.05313.62
5.3.00.0070.07013.63
5.2.170.0030.06013.22
5.2.160.0070.05313.22
5.2.150.0030.05013.22
5.2.140.0030.03713.22
5.2.130.0000.03313.22
5.2.120.0000.03013.22
5.2.110.0000.05013.22
5.2.100.0070.05013.22
5.2.90.0000.06313.22
5.2.80.0030.05713.22
5.2.70.0000.05713.22
5.2.60.0070.05713.22
5.2.50.0070.05713.22
5.2.40.0070.04713.22
5.2.30.0030.06013.22
5.2.20.0000.05313.22
5.2.10.0000.06013.22
5.2.00.0030.04713.22
5.1.60.0030.03013.22
5.1.50.0030.05313.22
5.1.40.0030.04713.22
5.1.30.0030.05313.22
5.1.20.0100.05313.22
5.1.10.0170.03313.22
5.1.00.0000.06013.22
5.0.50.0000.03313.22
5.0.40.0070.04013.22
5.0.30.0100.06013.22
5.0.20.0030.04013.22
5.0.10.0030.03713.22
5.0.00.0000.07013.22
4.4.90.0000.03313.22
4.4.80.0000.03713.22
4.4.70.0000.02713.22
4.4.60.0130.02313.22
4.4.50.0070.03013.22
4.4.40.0000.04013.22
4.4.30.0000.03013.22
4.4.20.0000.03313.22
4.4.10.0000.03313.22
4.4.00.0030.05013.22
4.3.110.0000.03313.22
4.3.100.0030.03713.22
4.3.90.0030.03313.22
4.3.80.0070.05013.22
4.3.70.0000.02713.22
4.3.60.0000.03713.22
4.3.50.0000.03013.22
4.3.40.0000.03713.22
4.3.30.0030.02313.22
4.3.20.0000.03713.22
4.3.10.0030.03713.22
4.3.00.0030.03713.22

preferences:
54.16 ms | 401 KiB | 5 Q