3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'a'; $b = 'b'; var_dump(isset($a, $b, $c));

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)
8.3.60.0070.01116.63
8.3.50.0090.00618.32
8.3.40.0060.00918.71
8.3.30.0070.00718.92
8.3.20.0000.00720.00
8.3.10.0040.00421.77
8.3.00.0080.00019.13
8.2.180.0090.00618.18
8.2.170.0070.00722.96
8.2.160.0110.00420.43
8.2.150.0000.00824.18
8.2.140.0000.00824.66
8.2.130.0000.00726.16
8.2.120.0080.00019.48
8.2.110.0030.00720.48
8.2.100.0040.00819.36
8.2.90.0090.00019.27
8.2.80.0000.00817.97
8.2.70.0050.00517.38
8.2.60.0030.00818.04
8.2.50.0000.01218.07
8.2.40.0030.00619.94
8.2.30.0050.00318.07
8.2.20.0040.00417.68
8.2.10.0030.00517.93
8.2.00.0050.00317.54
8.1.280.0120.00825.92
8.1.270.0030.00618.88
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0060.00320.83
8.1.230.0120.00017.66
8.1.220.0000.00717.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0050.00317.00
8.1.180.0050.00318.10
8.1.170.0030.00520.44
8.1.160.0070.00021.91
8.1.150.0000.00718.75
8.1.140.0000.00717.44
8.1.130.0070.00017.82
8.1.120.0000.00717.48
8.1.110.0000.00717.35
8.1.100.0000.00717.29
8.1.90.0080.00317.43
8.1.80.0020.00517.35
8.1.70.0030.00317.47
8.1.60.0090.00017.58
8.1.50.0000.00917.52
8.1.40.0080.00017.40
8.1.30.0050.00317.64
8.1.20.0040.00417.53
8.1.10.0030.00517.27
8.1.00.0040.00417.40
8.0.300.0040.00418.77
8.0.290.0000.00716.63
8.0.280.0000.00818.42
8.0.270.0070.00017.25
8.0.260.0000.00617.20
8.0.250.0000.00716.98
8.0.240.0040.00416.91
8.0.230.0000.00716.84
8.0.220.0040.00416.83
8.0.210.0030.00516.89
8.0.200.0040.00416.91
8.0.190.0070.00016.93
8.0.180.0030.00416.92
8.0.170.0050.00216.92
8.0.160.0070.00016.82
8.0.150.0000.00716.82
8.0.140.0070.00016.76
8.0.130.0090.00013.27
8.0.120.0040.00416.75
8.0.110.0050.00316.84
8.0.100.0060.00316.68
8.0.90.0040.00416.91
8.0.80.0120.00316.83
8.0.70.0050.00316.76
8.0.60.0040.00416.98
8.0.50.0040.00416.72
8.0.30.0120.01116.99
8.0.20.0110.00817.40
8.0.10.0070.00017.04
8.0.00.0160.00716.73
7.4.330.0000.00515.09
7.4.320.0030.00316.49
7.4.300.0060.00016.60
7.4.290.0000.00716.57
7.4.280.0040.00416.54
7.4.270.0050.00316.63
7.4.260.0030.00316.37
7.4.250.0080.00016.47
7.4.240.0030.00316.61
7.4.230.0020.00516.40
7.4.220.0110.01416.46
7.4.210.0120.00516.57
7.4.200.0030.00316.48
7.4.160.0000.01516.27
7.4.150.0070.01017.40
7.4.140.0090.01117.86
7.4.130.0080.00916.44
7.4.120.0120.00516.40
7.4.110.0160.00616.25
7.4.100.0120.00616.35
7.4.90.0060.01016.59
7.4.80.0130.01019.39
7.4.70.0100.00716.46
7.4.60.0030.01316.29
7.4.50.0050.00316.34
7.4.40.0060.01016.61
7.4.30.0070.01016.59
7.4.00.0070.01015.00
7.3.330.0060.00013.05
7.3.320.0080.00412.87
7.3.310.0000.00716.16
7.3.300.0070.00016.17
7.3.290.0030.00316.15
7.3.280.0060.01116.11
7.3.270.0070.01017.40
7.3.260.0130.00316.41
7.3.250.0060.01316.06
7.3.240.0100.00716.30
7.3.230.0130.01016.39
7.3.210.0140.00316.31
7.3.200.0050.01119.39
7.3.190.0100.00616.32
7.3.180.0100.00716.22
7.3.170.0070.01516.37
7.3.160.0070.01116.24
7.2.330.0070.01016.52
7.2.320.0160.00016.51
7.2.310.0120.00616.56
7.2.300.0100.00716.41
7.2.290.0100.00716.55
7.2.00.0070.00719.15
7.1.100.0080.00517.91
7.1.70.0000.00717.04
7.1.60.0090.01519.50
7.1.50.0070.01116.73
7.1.00.0030.07322.31
7.0.200.0160.00315.06
7.0.140.0000.07722.05
7.0.60.0000.05319.92
7.0.50.0070.05317.86
7.0.40.0130.05020.16
7.0.30.0370.04320.18
7.0.20.0330.07720.11
7.0.10.0100.08020.10
7.0.00.0030.09020.28
5.6.280.0000.07320.81
5.6.210.0100.07720.69
5.6.200.0170.05718.12
5.6.190.0070.08320.33
5.6.180.0270.04320.62
5.6.170.0230.07720.55
5.6.160.0030.05320.32
5.6.150.0100.05718.12
5.6.140.0070.07318.21
5.6.130.0100.08318.21
5.6.120.0100.04321.00
5.6.110.0130.07721.13
5.6.100.0070.07721.03
5.6.90.0000.04721.12
5.6.80.0030.05020.39
5.5.350.0000.08720.34
5.5.340.0130.07718.00
5.5.330.0070.08720.46
5.5.320.0300.06320.21
5.5.310.0270.08020.31
5.5.300.0070.06717.96
5.5.290.0070.04718.01
5.5.280.0100.08020.86
5.5.270.0000.09320.76
5.5.260.0030.04020.79
5.5.250.0070.07720.79
5.5.240.0230.06720.18
5.4.450.0370.05019.26
5.4.440.0870.06719.46
5.4.430.1000.06019.36
5.4.420.0230.05019.63
5.4.410.0200.06718.80
5.4.400.0800.05718.79
5.4.390.0870.07018.54
5.4.380.1170.06318.49
5.4.370.1000.08018.64
5.4.360.0830.07718.62
5.4.350.1170.06318.71
5.4.340.1200.05718.66
5.4.320.0830.06318.64
5.4.310.0930.06318.68
5.4.300.1370.04718.71
5.4.290.1200.05318.70
5.4.280.1200.05018.69
5.4.270.1130.06018.49
5.4.260.1130.05018.67
5.4.250.1200.06718.48
5.4.240.1100.05718.46
5.4.230.0830.07018.59
5.4.220.0830.07318.57
5.4.210.1170.06318.48
5.4.200.0900.07016.56
5.4.190.0700.06318.58
5.4.180.1170.05718.63
5.4.170.1070.06318.64
5.4.160.0930.05718.62
5.4.150.0930.05018.47
5.4.140.0900.06016.13
5.4.130.1170.05716.08
5.4.120.0830.06016.07
5.4.110.1030.04716.24
5.4.100.1200.06716.22
5.4.90.1130.05016.35
5.4.80.1330.04716.14
5.4.70.1000.06016.30
5.4.60.1000.06016.28
5.4.50.1000.05716.32
5.4.40.1330.04316.32
5.4.30.1300.05316.13
5.4.20.1100.06316.27
5.4.10.1300.08316.31
5.4.00.1200.06715.57
5.3.290.1170.08314.64
5.3.280.1200.07014.71
5.3.270.1270.06714.67
5.3.260.1070.07014.53
5.3.250.1430.07314.52
5.3.240.1230.06014.65
5.3.230.1270.05014.55
5.3.220.1600.05014.54
5.3.210.1130.06014.56
5.3.200.1330.06714.47
5.3.190.1370.06714.54
5.3.180.1430.07014.64
5.3.170.1200.06714.56
5.3.160.1200.06314.52
5.3.150.1130.05714.47
5.3.140.1400.04714.62
5.3.130.1430.08014.52
5.3.120.1600.06714.61
5.3.110.1300.06314.53
5.3.100.1070.06713.96
5.3.90.1400.06313.95
5.3.80.1030.06013.95
5.3.70.1000.05313.96
5.3.60.1030.05013.91
5.3.50.0900.05714.04
5.3.40.0900.06313.91
5.3.30.1130.06013.84
5.3.20.1200.05013.60
5.3.10.1000.04713.58
5.3.00.0970.06313.71
5.2.170.0900.06011.28
5.2.160.0830.04711.29
5.2.150.1500.05311.12
5.2.140.0930.04011.29
5.2.130.1070.04011.13
5.2.120.1000.04711.06
5.2.110.0870.04011.16
5.2.100.0830.04711.26
5.2.90.0900.04011.07
5.2.80.1030.05311.06
5.2.70.0970.06011.09
5.2.60.1070.05311.18
5.2.50.0900.04711.07
5.2.40.0730.05010.92
5.2.30.0900.05711.12
5.2.20.0800.05310.96
5.2.10.0870.05310.92
5.2.00.0930.04010.77
5.1.60.0870.04710.05
5.1.50.0830.04010.04
5.1.40.0800.04010.01
5.1.30.0830.04710.46
5.1.20.0800.04010.40
5.1.10.0830.03310.08
5.1.00.0630.04310.11
5.0.50.0300.0378.64
5.0.40.0500.0308.42
5.0.30.0270.0508.24
5.0.20.0330.0238.22
5.0.10.0330.0338.18
5.0.00.0170.0508.19
4.4.90.0100.0235.89
4.4.80.0070.0275.86
4.4.70.0500.0235.89
4.4.60.0330.0235.89
4.4.50.0300.0235.85
4.4.40.0270.0375.90
4.4.30.0170.0305.93
4.4.20.0500.0135.95
4.4.10.0330.0205.93
4.4.00.0500.0435.92
4.3.110.0400.0305.84
4.3.100.0400.0205.79
4.3.90.0200.0235.79
4.3.80.0370.0405.77
4.3.70.0470.0175.86
4.3.60.0400.0205.79
4.3.50.0270.0275.90
4.3.40.0230.0405.74
4.3.30.0100.0234.53
4.3.20.0200.0174.54
4.3.10.1930.0234.52
4.3.00.0230.0176.79

preferences:
52.71 ms | 400 KiB | 5 Q