3v4l.org

run code in 300+ PHP versions simultaneously
<?php function is_set($v) { return $v !== null; } if(is_set($var)) { echo $var; } else { echo '$var is not set' ; }

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)
8.3.60.0140.00316.63
8.3.50.0110.00821.95
8.3.40.0110.00418.77
8.3.30.0100.00718.97
8.3.20.0000.00820.16
8.3.10.0040.00423.51
8.3.00.0080.00020.65
8.2.180.0130.01016.63
8.2.170.0140.00022.96
8.2.160.0100.01020.38
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00320.91
8.2.110.0040.00420.98
8.2.100.0120.00017.91
8.2.90.0000.00819.13
8.2.80.0000.00817.97
8.2.70.0050.00317.37
8.2.60.0030.00617.80
8.2.50.0040.00418.10
8.2.40.0040.00420.36
8.2.30.0040.00419.09
8.2.20.0040.00417.69
8.2.10.0000.00717.98
8.2.00.0000.00717.52
8.1.280.0090.00625.92
8.1.270.0050.00322.02
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.92
8.1.230.0110.00020.39
8.1.220.0060.00317.74
8.1.210.0000.00818.77
8.1.200.0060.00317.00
8.1.190.0000.00817.10
8.1.180.0070.00318.10
8.1.170.0060.00318.56
8.1.160.0000.00718.80
8.1.150.0000.00719.97
8.1.140.0050.00317.22
8.1.130.0070.00317.79
8.1.120.0030.00317.36
8.1.110.0060.00317.25
8.1.100.0070.00017.30
8.1.90.0000.00717.29
8.1.80.0040.00417.26
8.1.70.0000.00717.27
8.1.60.0000.00817.51
8.1.50.0080.00017.52
8.1.40.0000.00717.36
8.1.30.0030.00617.63
8.1.20.0000.00917.53
8.1.10.0040.00417.39
8.1.00.0060.00517.35
8.0.300.0030.00618.77
8.0.290.0000.00716.75
8.0.280.0000.00818.29
8.0.270.0040.00417.12
8.0.260.0030.00317.18
8.0.250.0000.00616.78
8.0.240.0070.00016.85
8.0.230.0000.00716.89
8.0.220.0040.00416.84
8.0.210.0030.00316.72
8.0.200.0060.00016.89
8.0.190.0060.00316.77
8.0.180.0060.00316.78
8.0.170.0040.00416.76
8.0.160.0000.00716.81
8.0.150.0070.00016.69
8.0.140.0040.00416.63
8.0.130.0030.00313.20
8.0.120.0060.00316.63
8.0.110.0050.00216.85
8.0.100.0000.00716.88
8.0.90.0000.00716.64
8.0.80.0090.00616.88
8.0.70.0000.00716.73
8.0.60.0000.00716.73
8.0.50.0000.00816.80
8.0.30.0130.00516.83
8.0.20.0150.00617.40
8.0.10.0000.00716.88
8.0.00.0100.00816.72
7.4.330.0020.00215.00
7.4.320.0030.00316.54
7.4.300.0030.00316.39
7.4.290.0030.00316.44
7.4.280.0040.00416.43
7.4.270.0000.00716.44
7.4.260.0000.00716.41
7.4.250.0080.00016.48
7.4.240.0020.00516.38
7.4.230.0000.00716.39
7.4.220.0090.00916.56
7.4.210.0110.00416.55
7.4.200.0030.00316.36
7.4.160.0120.00616.26
7.4.150.0070.01017.40
7.4.140.0130.00517.86
7.4.130.0020.01416.41
7.4.120.0070.01016.42
7.4.110.0100.00716.57
7.4.100.0100.00716.53
7.4.90.0150.00416.36
7.4.80.0150.00619.39
7.4.70.0070.01016.48
7.4.60.0110.00716.40
7.4.50.0030.00316.30
7.4.40.0070.01116.46
7.4.30.0150.00316.57
7.4.00.0070.01014.83
7.3.330.0060.00013.37
7.3.320.0000.00513.17
7.3.310.0030.00316.38
7.3.300.0070.00016.34
7.3.290.0030.01016.38
7.3.280.0040.01016.35
7.3.270.0030.01317.40
7.3.260.0120.00616.29
7.3.250.0150.00616.42
7.3.240.0090.01216.41
7.3.230.0090.01316.57
7.3.210.0100.00716.70
7.3.200.0060.00919.39
7.3.190.0090.00916.42
7.3.180.0100.00616.53
7.3.170.0140.00316.42
7.3.160.0060.01516.61
7.3.120.0030.01214.77
7.3.10.0000.01416.45
7.3.00.0070.01016.78
7.2.330.0170.00716.46
7.2.320.0090.01216.30
7.2.310.0080.00816.30
7.2.300.0100.01316.45
7.2.290.0090.00916.24
7.2.130.0080.00816.76
7.2.120.0070.00716.96
7.2.110.0030.00916.72
7.2.100.0070.00716.75
7.2.90.0130.00316.78
7.2.80.0090.00316.40
7.2.70.0100.00716.74
7.2.60.0060.00716.71
7.2.50.0070.00316.68
7.2.40.0100.00716.48
7.2.30.0090.00616.98
7.2.20.0070.01016.83
7.2.10.0000.01316.49
7.2.00.0030.01118.04
7.1.250.0090.00315.82
7.1.200.0110.00015.79
7.1.100.0030.01318.06
7.1.70.0000.01017.20
7.1.60.0100.01419.70
7.1.50.0100.01316.89
7.1.00.0030.07722.33
7.0.200.0100.00016.75
7.0.140.0070.07322.04
7.0.60.0130.08019.94
7.0.50.0030.05317.94
7.0.40.0100.08020.24
7.0.30.0370.06720.30
7.0.20.0230.05020.26
7.0.10.0130.06020.23
7.0.00.0070.07720.22
5.6.280.0070.07021.10
5.6.210.0070.07320.59
5.6.200.0170.08018.16
5.6.190.0100.08720.56
5.6.180.0330.06720.52
5.6.170.0200.05020.58
5.6.160.0130.08020.57
5.6.150.0000.05718.16
5.6.140.0100.07718.19
5.6.130.0000.04318.17
5.6.120.0030.05321.14
5.6.110.0000.09321.14
5.6.100.0100.04320.98
5.6.90.0100.09020.98
5.6.80.0030.07020.52
5.6.70.4430.04020.44
5.5.350.0070.08320.41
5.5.340.0030.07018.02
5.5.330.0170.07020.29
5.5.320.3370.04020.25
5.5.310.0300.07720.24
5.5.300.0100.07317.95
5.5.290.0000.05017.95
5.5.280.0170.06320.77
5.5.270.0030.08320.88
5.5.260.0100.08020.77
5.5.250.0130.07320.69
5.5.240.4030.03320.27
5.4.450.0100.03719.37
5.4.440.0070.04719.49
5.4.430.0000.08319.52
5.4.420.0030.04719.54
5.4.410.0070.03719.39
5.4.400.0170.04319.23
5.4.390.0030.08019.08
5.4.380.0030.05719.20
5.4.370.0100.07019.26
5.4.360.0000.05318.87
5.4.350.0000.07019.13
5.4.340.0000.08318.98
5.4.320.0030.04319.09
5.4.310.0100.07319.20
5.4.300.0000.04719.16
5.4.290.0100.04019.22
5.4.280.0070.05719.14
5.4.270.0170.04318.98
5.4.260.0000.04719.16
5.4.250.0030.08319.12
5.4.240.0100.04319.01
5.4.230.0030.04019.07
5.4.220.0000.07719.21
5.4.210.0030.04318.85
5.4.200.0000.04719.06
5.4.190.0000.07318.84
5.4.180.0030.05019.19
5.4.170.0070.07019.18
5.4.160.0100.06019.18
5.4.150.0100.04719.11
5.4.140.0000.04016.50
5.4.130.0000.04016.51
5.4.120.0070.05716.51
5.4.110.0030.03716.54
5.4.100.0070.06716.18
5.4.90.0070.06716.46
5.4.80.0030.07716.35
5.4.70.0000.05716.25
5.4.60.0070.06716.51
5.4.50.0070.06016.55
5.4.40.0100.03316.16
5.4.30.0000.04016.43
5.4.20.0030.07016.23
5.4.10.0030.07016.51
5.4.00.0100.07715.73
5.3.290.0000.04714.73
5.3.280.0070.07014.51
5.3.270.0070.04314.61
5.3.260.0030.07314.68
5.3.250.0070.04314.57
5.3.240.0070.06314.61
5.3.230.0000.07714.61
5.3.220.0030.04714.68
5.3.210.0030.05314.45
5.3.200.0030.07314.64
5.3.190.0070.07014.66
5.3.180.0030.07314.61
5.3.170.0070.05714.46
5.3.160.0070.06714.68
5.3.150.0030.07314.46
5.3.140.0030.07714.55
5.3.130.0030.07714.45
5.3.120.0000.07714.47
5.3.110.0030.06714.62
5.3.100.0070.07014.01
5.3.90.0000.07714.14
5.3.80.0000.06013.92
5.3.70.0030.04314.24
5.3.60.0000.04714.22
5.3.50.0100.07313.85
5.3.40.0030.05713.85
5.3.30.0070.07013.82
5.3.20.0000.04713.80
5.3.10.0030.04713.81
5.3.00.0030.05313.63
5.2.170.0070.05712.70
5.2.160.0030.06012.70
5.2.150.0000.06712.70
5.2.140.0030.03712.70
5.2.130.0070.05712.70
5.2.120.0030.03012.70
5.2.110.0000.06312.70
5.2.100.0000.04312.70
5.2.90.0000.06312.70
5.2.80.0070.06012.70
5.2.70.0030.04312.70
5.2.60.0030.06012.70
5.2.50.0000.06312.70
5.2.40.0000.05012.70
5.2.30.0030.06312.70
5.2.20.0070.05712.70
5.2.10.0000.04312.70
5.2.00.0030.02712.70
5.1.60.0070.02312.70
5.1.50.0000.02312.70
5.1.40.0000.02312.70
5.1.30.0000.02712.70
5.1.20.0000.02712.70
5.1.10.0030.02312.70
5.1.00.0030.02312.70
5.0.50.0000.02012.70
5.0.40.0000.02012.70
5.0.30.0030.03012.70
5.0.20.0000.02012.70
5.0.10.0000.02312.70
5.0.00.0000.03012.70
4.4.90.0000.03712.70
4.4.80.0000.03712.70
4.4.70.0030.01312.70
4.4.60.0000.02312.70
4.4.50.0000.03312.70
4.4.40.0000.02312.70
4.4.30.0000.02712.70
4.4.20.0000.01312.70
4.4.10.0000.01312.70
4.4.00.0000.02312.70
4.3.110.0000.01312.70
4.3.100.0000.01312.70
4.3.90.0000.01712.70
4.3.80.0000.02712.70
4.3.70.0000.01312.70
4.3.60.0070.01012.70
4.3.50.0000.01712.70
4.3.40.0000.02712.70
4.3.30.0000.01712.70
4.3.20.0000.01712.70
4.3.10.0030.01312.70
4.3.00.0000.02012.70

preferences:
55.61 ms | 401 KiB | 5 Q