3v4l.org

run code in 300+ PHP versions simultaneously
<?php $false = "a"; $v = true; echo (string) ${!$v}, PHP_EOL; echo !isset(${!$v});

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)
8.4.20.0100.01017.61
8.4.10.0040.00419.55
8.3.150.0120.00616.74
8.3.140.0040.00416.64
8.3.130.0120.00618.57
8.3.120.0060.00318.83
8.3.110.0000.00920.94
8.3.100.0060.00324.06
8.3.90.0110.00726.77
8.3.80.0000.00918.43
8.3.70.0120.00318.43
8.3.60.0130.00318.31
8.3.50.0140.00722.84
8.3.40.0110.00418.79
8.3.30.0070.00718.43
8.3.20.0000.00720.20
8.3.10.0070.00021.77
8.3.00.0030.00519.54
8.2.270.0100.01018.52
8.2.260.0060.00817.24
8.2.250.0050.00316.75
8.2.240.0000.01917.36
8.2.230.0060.01022.58
8.2.220.0030.00637.54
8.2.210.0030.00526.77
8.2.200.0090.00016.75
8.2.190.0090.00616.59
8.2.180.0070.01116.75
8.2.170.0110.00322.96
8.2.160.0110.00921.16
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0030.00522.27
8.2.120.0040.00426.35
8.2.110.0070.00422.29
8.2.100.0040.00817.72
8.2.90.0030.00519.26
8.2.80.0050.00317.97
8.2.70.0050.00317.63
8.2.60.0040.00417.93
8.2.50.0060.00318.10
8.2.40.0070.00020.50
8.2.30.0050.00319.30
8.2.20.0040.00417.73
8.2.10.0080.00018.12
8.2.00.0040.00418.10
8.1.310.0180.00018.47
8.1.300.0000.00817.87
8.1.290.0000.00930.84
8.1.280.0040.01125.92
8.1.270.0000.00823.91
8.1.260.0040.00728.09
8.1.250.0000.00728.09
8.1.240.0060.00323.91
8.1.230.0040.00720.92
8.1.220.0040.00417.78
8.1.210.0040.00418.77
8.1.200.0100.00017.23
8.1.190.0040.00417.22
8.1.180.0030.00518.10
8.1.170.0040.00418.50
8.1.160.0070.00022.04
8.1.150.0070.00020.66
8.1.140.0030.00519.52
8.1.130.0000.00717.69
8.1.120.0050.00217.48
8.1.110.0030.00617.30
8.1.100.0040.00417.47
8.1.90.0050.00517.35
8.1.80.0030.00317.38
8.1.70.0000.00817.35
8.1.60.0000.00817.63
8.1.50.0040.00417.55
8.1.40.0070.00417.49
8.1.30.0060.00317.56
8.1.20.0030.00517.66
8.1.10.0040.00417.44
8.1.00.0040.00417.44
8.0.300.0000.00718.77
8.0.290.0000.00716.88
8.0.280.0030.00318.43
8.0.270.0000.00717.15
8.0.260.0000.00617.15
8.0.250.0040.00416.88
8.0.240.0030.00616.87
8.0.230.0030.00316.89
8.0.220.0040.00416.79
8.0.210.0000.00816.82
8.0.200.0030.00316.89
8.0.190.0080.00017.04
8.0.180.0000.00816.99
8.0.170.0050.00316.85
8.0.160.0030.00316.95
8.0.150.0000.00716.93
8.0.140.0000.00716.94
8.0.130.0030.00313.29
8.0.120.0030.00516.94
8.0.110.0070.00016.88
8.0.100.0000.00917.01
8.0.90.0000.00716.77
8.0.80.0150.00616.85
8.0.70.0040.00416.95
8.0.60.0000.00716.77
8.0.50.0000.00716.81
8.0.30.0100.00917.19
8.0.20.0090.01017.40
8.0.10.0040.00417.02
8.0.00.0070.01016.73
7.4.330.0020.00215.08
7.4.320.0000.00616.58
7.4.300.0000.00616.49
7.4.290.0030.00316.49
7.4.280.0060.00316.47
7.4.270.0050.00216.49
7.4.260.0030.00316.38
7.4.250.0000.00716.47
7.4.240.0000.00816.60
7.4.230.0040.00416.60
7.4.220.0090.00916.48
7.4.210.0070.01416.53
7.4.200.0030.00316.48
7.4.160.0090.00816.44
7.4.150.0110.00717.40
7.4.140.0050.01617.86
7.4.130.0070.01116.66
7.4.120.0100.00816.53
7.4.110.0110.00716.39
7.4.100.0130.00316.76
7.4.90.0030.01516.47
7.4.80.0030.01419.39
7.4.70.0100.00716.37
7.4.60.0030.01316.31
7.4.50.0070.01116.66
7.4.40.0220.00316.56
7.4.30.0100.00616.72
7.4.10.0100.00714.71
7.4.00.0070.00914.94
7.3.330.0030.00313.03
7.3.320.0000.00513.14
7.3.310.0070.00016.31
7.3.300.0030.00316.34
7.3.290.0070.00816.36
7.3.280.0070.01116.33
7.3.270.0070.01317.40
7.3.260.0080.01016.58
7.3.250.0120.00716.57
7.3.240.0150.00716.42
7.3.230.0140.00516.39
7.3.210.0070.01116.36
7.3.200.0170.00416.38
7.3.190.0140.00716.27
7.3.180.0030.01316.56
7.3.170.0080.00916.66
7.3.160.0140.00916.28
7.3.130.0120.00614.79
7.3.120.0150.00414.97
7.3.110.0060.01314.53
7.3.100.0030.01014.74
7.3.90.0120.00315.08
7.3.80.0060.00614.82
7.3.70.0040.00914.86
7.3.60.0000.01514.92
7.3.50.0000.00915.01
7.3.40.0130.00014.85
7.3.30.0030.01014.80
7.3.20.0080.00816.46
7.3.10.0040.00716.43
7.3.00.0060.00616.66
7.2.330.0060.01216.69
7.2.320.0130.00316.31
7.2.310.0080.00816.63
7.2.300.0080.00816.44
7.2.290.0030.01416.63
7.2.260.0090.00614.85
7.2.250.0110.00715.23
7.2.240.0060.00915.14
7.2.230.0030.01015.21
7.2.220.0060.00914.84
7.2.210.0000.01115.05
7.2.200.0040.01114.91
7.2.190.0080.00314.87
7.2.180.0160.00014.75
7.2.170.0030.00714.91
7.2.160.0030.01014.80
7.2.150.0060.00916.93
7.2.140.0100.00616.54
7.2.130.0030.00816.93
7.2.120.0040.00916.78
7.2.110.0060.00616.80
7.2.100.0070.00616.89
7.2.90.0040.00916.86
7.2.80.0050.00816.74
7.2.70.0090.00616.83
7.2.60.0080.00616.85
7.2.50.0090.00316.80
7.2.40.0060.00716.69
7.2.30.0070.00516.84
7.2.20.0070.00716.90
7.2.10.0040.00816.86
7.2.00.0070.00816.86
7.1.330.0060.00615.39
7.1.320.0030.01315.95
7.1.310.0060.00315.83
7.1.300.0040.00415.39
7.1.290.0090.00315.46
7.1.280.0040.00815.52
7.1.270.0040.00915.64
7.1.260.0060.00315.82
7.1.250.0030.01115.80
7.1.240.0000.01115.65
7.1.230.0110.00315.61
7.1.220.0100.00315.63
7.1.210.0040.01115.58
7.1.200.0100.00315.54
7.1.190.0030.00815.84
7.1.180.0060.00715.77
7.1.170.0070.00715.68
7.1.160.0000.01315.48
7.1.150.0030.00915.82
7.1.140.0000.01115.86
7.1.130.0030.00615.73
7.1.120.0110.00315.70
7.1.110.0080.00815.70
7.1.100.0000.01415.60
7.1.90.0000.01215.46
7.1.80.0060.00915.75
7.1.70.0050.00516.36
7.1.60.0050.01017.67
7.1.50.0070.01015.72
7.1.40.0080.00415.75
7.1.30.0080.00415.69
7.1.20.0030.00615.88
7.1.10.0080.00415.59
7.1.00.0030.04318.85
7.0.330.0040.00915.36
7.0.320.0030.00915.20
7.0.310.0070.00715.06
7.0.300.0030.00915.21
7.0.290.0040.00515.33
7.0.280.0080.00415.29
7.0.270.0060.00315.29
7.0.260.0030.00715.44
7.0.250.0030.00615.09
7.0.240.0030.01015.26
7.0.230.0040.00715.12
7.0.220.0070.00715.37
7.0.210.0040.01115.47
7.0.200.0170.00915.12
7.0.190.0100.00315.28
7.0.180.0060.00815.27
7.0.170.0000.01215.43
7.0.160.0100.00315.34
7.0.150.0070.01115.23
7.0.140.0000.00915.34
7.0.130.0020.04218.76
7.0.120.0040.04118.56
7.0.110.0030.04318.76
7.0.100.0020.04218.81
7.0.90.0020.04418.63
7.0.80.0000.04118.72
7.0.70.0080.03618.71
7.0.60.0050.04218.67
7.0.50.0020.04318.91
7.0.40.0030.03917.69
7.0.30.0080.03717.65
7.0.20.0050.04217.75
7.0.10.0040.03817.80
7.0.00.0060.03817.59
5.6.400.0000.00814.09
5.6.390.0100.00314.49
5.6.380.0080.00613.97
5.6.370.0080.00814.02
5.6.360.0030.00614.36
5.6.350.0100.00314.34
5.6.340.0000.01014.24
5.6.330.0040.01114.50
5.6.320.0030.00614.13
5.6.310.0000.01514.15
5.6.300.0070.01014.44
5.6.290.0090.00914.25
5.6.280.0080.03717.66
5.6.270.0030.04017.67
5.6.260.0050.03917.58
5.6.250.0080.03517.63
5.6.240.0070.04017.61
5.6.230.0030.04117.61
5.6.220.0050.03917.60
5.6.210.0030.04217.50
5.6.200.0050.04017.73
5.6.190.0050.04017.68
5.6.180.0080.03717.81
5.6.170.0070.03917.71
5.6.160.0030.04317.55
5.6.150.0070.03817.45
5.6.140.0030.04317.63
5.6.130.0030.04217.53
5.6.120.0010.04017.54
5.6.110.0080.03817.76
5.6.100.0050.04217.56
5.6.90.0040.03917.64
5.6.80.0080.03617.25
5.6.70.0070.03517.35
5.6.60.0080.03517.31
5.6.50.0100.03517.29
5.6.40.0060.03517.38
5.6.30.0030.03817.19
5.6.20.0030.03817.36
5.6.10.0030.03817.37
5.6.00.0030.03817.13
5.5.380.0070.06717.52
5.5.370.0030.07017.61
5.5.360.0000.07717.44
5.5.350.0000.07317.60
5.5.340.0030.06317.84
5.5.330.0030.07017.75
5.5.320.0100.06317.80
5.5.310.0070.06718.11
5.5.300.0030.05718.04
5.5.290.0000.07018.23
5.5.280.0030.07718.24
5.5.270.0070.06718.04
5.5.260.0000.08018.05
5.5.250.0070.07017.88
5.5.240.0000.07017.49
5.5.230.0000.07717.22
5.5.220.0030.07017.11
5.5.210.0000.07317.45
5.5.200.0030.06317.43
5.5.190.0000.07317.10
5.5.180.0030.07017.59
5.5.160.0030.06317.40
5.5.150.0030.07017.14
5.5.140.0070.06317.58
5.5.130.0000.07017.36
5.5.120.0070.06717.37
5.5.110.0070.06317.37
5.5.100.0070.06317.01
5.5.90.0000.07017.29
5.5.80.0030.06717.44
5.5.70.0000.07317.04
5.5.60.0070.06317.04
5.5.50.0070.06017.31
5.5.40.0000.07017.48
5.5.30.0030.06317.31
5.5.20.0030.07017.08
5.5.10.0000.07317.26
5.5.00.0000.07017.06
5.4.450.0030.07019.34
5.4.440.0070.07019.44
5.4.430.0000.07319.29
5.4.420.0030.06719.44
5.4.410.0030.07019.12
5.4.400.0100.06019.29
5.4.390.0000.07319.15
5.4.380.0000.07018.95
5.4.370.0070.06319.17
5.4.360.0000.06719.25
5.4.350.0070.06318.91
5.4.340.0070.06719.17
5.4.320.0000.07019.08
5.4.310.0070.06319.09
5.4.300.0000.07019.15
5.4.290.0030.06319.10
5.4.280.0000.06719.13
5.4.270.0130.05719.16
5.4.260.0000.06718.91
5.4.250.0000.06318.90
5.4.240.0070.06319.09
5.4.230.0000.06718.92
5.4.220.0030.07018.89
5.4.210.0030.06719.09
5.4.200.0000.06319.01
5.4.190.0030.06319.24
5.4.180.0030.06719.01
5.4.170.0000.07019.07
5.4.160.0000.07018.93
5.4.150.0000.06719.13
5.4.140.0030.06716.40
5.4.130.0000.06316.35
5.4.120.0000.06716.21
5.4.110.0030.06716.35
5.4.100.0070.06016.54
5.4.90.0000.06716.52
5.4.80.0030.06716.16
5.4.70.0030.06016.25
5.4.60.0000.06716.37
5.4.50.0070.06016.09
5.4.40.0000.06716.31
5.4.30.0100.05716.38
5.4.20.0030.06316.49
5.4.10.0000.07016.50
5.4.00.0000.06015.78
5.3.290.0030.06714.76
5.3.280.0070.06314.47
5.3.270.0100.06314.52
5.3.260.0000.07314.68
5.3.250.0030.06714.66
5.3.240.0000.07014.44
5.3.230.0000.07014.68
5.3.220.0070.06314.57
5.3.210.0030.07014.48
5.3.200.0070.06014.63
5.3.190.0030.06714.63
5.3.180.0000.06714.65
5.3.170.0000.07014.40
5.3.160.0070.06314.54
5.3.150.0000.06714.48
5.3.140.0030.06714.49
5.3.130.0100.06314.53
5.3.120.0070.06714.43
5.3.110.0100.06314.42
5.3.100.0000.07013.98
5.3.90.0100.05313.96
5.3.80.0070.06313.77
5.3.70.0030.06313.93
5.3.60.0070.05714.01
5.3.50.0030.06313.88
5.3.40.0030.06313.83
5.3.30.0030.06013.74
5.3.20.0000.06313.75
5.3.10.0070.05313.58
5.3.00.0030.06713.39
5.2.170.0000.05311.06
5.2.160.0000.05711.09
5.2.150.0000.06011.21
5.2.140.0000.05711.07
5.2.130.0000.05711.04
5.2.120.0030.05311.17
5.2.110.0070.05011.02
5.2.100.0000.05711.02
5.2.90.0070.05011.09
5.2.80.0000.05710.99
5.2.70.0000.05711.16
5.2.60.0000.05710.82
5.2.50.0030.05311.02
5.2.40.0000.05710.92
5.2.30.0030.05310.86
5.2.20.0030.05310.91
5.2.10.0030.05010.93
5.2.00.0030.05310.57
5.1.60.0000.04710.04
5.1.50.0000.0479.87
5.1.40.0000.0479.81
5.1.30.0030.04710.23
5.1.20.0030.04710.33
5.1.10.0100.04010.04
5.1.00.0000.05010.30
5.0.50.0070.0338.93
5.0.40.0030.0338.93
5.0.30.0000.0538.93
5.0.20.0000.0378.93
5.0.10.0000.0378.93
5.0.00.0000.0578.93
4.4.90.0000.0308.93
4.4.80.0000.0308.93
4.4.70.0000.0308.93
4.4.60.0070.0238.93
4.4.50.0000.0308.93
4.4.40.0000.0478.93
4.4.30.0000.0308.93
4.4.20.0000.0308.93
4.4.10.0000.0308.93
4.4.00.0030.0438.93
4.3.110.0030.0278.93
4.3.100.0030.0278.93
4.3.90.0000.0278.93
4.3.80.0000.0478.93
4.3.70.0000.0308.93
4.3.60.0000.0308.93
4.3.50.0000.0338.93
4.3.40.0030.0408.93
4.3.30.0030.0278.93
4.3.20.0000.0308.93
4.3.10.0000.0308.93
4.3.00.0000.0338.93

preferences:
30.19 ms | 403 KiB | 5 Q