3v4l.org

run code in 300+ PHP versions simultaneously
<?php function &ref(&$rhs){ return $rhs; } $b = 1; $a = &ref($b); $a = "hello"; var_dump($a,$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)
8.3.40.0120.00318.75
8.3.30.0100.00319.10
8.3.20.0070.00020.25
8.3.10.0040.00423.60
8.3.00.0040.00419.06
8.2.170.0140.00022.96
8.2.160.0120.00322.13
8.2.150.0080.00024.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0100.00720.96
8.2.110.0060.00321.97
8.2.100.0040.00817.66
8.2.90.0030.00617.50
8.2.80.0040.00418.79
8.2.70.0100.00017.80
8.2.60.0040.00418.03
8.2.50.0000.00818.10
8.2.40.0080.00019.09
8.2.30.0030.00619.05
8.2.20.0000.00717.61
8.2.10.0050.00218.11
8.2.00.0030.00617.73
8.1.270.0000.00818.83
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0000.00923.92
8.1.230.0120.00017.76
8.1.220.0070.00017.78
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0000.00817.22
8.1.180.0030.00519.03
8.1.170.0060.00318.52
8.1.160.0040.00419.00
8.1.150.0070.00018.84
8.1.140.0030.00617.30
8.1.130.0000.00717.86
8.1.120.0030.00517.26
8.1.110.0000.00917.32
8.1.100.0030.00317.40
8.1.90.0040.00417.27
8.1.80.0030.00317.46
8.1.70.0040.00417.38
8.1.60.0030.00617.63
8.1.50.0040.00417.50
8.1.40.0000.00817.52
8.1.30.0020.00517.53
8.1.20.0000.00917.51
8.1.10.0040.00417.50
8.1.00.0040.00417.32
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0000.00718.31
8.0.270.0030.00317.09
8.0.260.0040.00417.18
8.0.250.0030.00316.95
8.0.240.0040.00316.84
8.0.230.0000.00716.91
8.0.220.0000.00716.68
8.0.210.0000.00616.82
8.0.200.0030.00316.77
8.0.190.0000.00916.89
8.0.180.0030.00316.83
8.0.170.0000.00716.79
8.0.160.0040.00416.87
8.0.150.0040.00416.65
8.0.140.0040.00416.69
8.0.130.0060.00313.24
8.0.120.0000.00716.64
8.0.110.0040.00416.77
8.0.100.0070.00016.86
8.0.90.0000.00716.70
8.0.80.0030.01316.78
8.0.70.0000.00716.88
8.0.60.0040.00316.69
8.0.50.0070.00016.78
8.0.30.0100.00916.82
8.0.20.0090.01317.40
8.0.10.0070.00016.82
8.0.00.0100.00616.75
7.4.330.0050.00015.03
7.4.320.0030.00316.52
7.4.300.0040.00416.55
7.4.290.0060.00016.51
7.4.280.0070.00016.59
7.4.270.0030.00316.59
7.4.260.0060.00316.62
7.4.250.0030.00516.51
7.4.240.0020.00516.41
7.4.230.0000.00716.39
7.4.220.0060.01116.45
7.4.210.0030.01716.58
7.4.200.0030.00316.49
7.4.160.0060.00916.43
7.4.150.0110.00717.40
7.4.140.0080.01317.86
7.4.130.0080.01216.40
7.4.120.0060.01116.55
7.4.110.0150.00616.45
7.4.100.0070.01416.47
7.4.90.0030.01416.45
7.4.80.0080.00819.39
7.4.70.0030.01616.57
7.4.60.0040.01816.35
7.4.50.0030.00616.51
7.4.40.0110.00616.43
7.4.30.0030.01416.43
7.4.10.0100.01014.87
7.4.00.0060.01314.93
7.3.330.0050.00013.05
7.3.320.0050.00013.26
7.3.310.0030.00316.35
7.3.300.0030.00316.29
7.3.290.0030.01016.25
7.3.280.0110.00816.26
7.3.270.0070.01117.40
7.3.260.0130.00416.61
7.3.250.0080.01216.24
7.3.240.0060.00916.26
7.3.230.0040.01316.43
7.3.210.0000.02016.21
7.3.200.0070.01019.39
7.3.190.0060.00916.37
7.3.180.0050.01116.22
7.3.170.0060.00916.27
7.3.160.0000.01616.58
7.3.130.0060.01314.67
7.3.120.0080.00814.97
7.3.110.0060.01014.41
7.3.100.0060.00914.67
7.3.90.0080.00314.76
7.3.80.0030.01114.85
7.3.70.0070.00314.76
7.3.60.0040.01014.87
7.3.50.0000.01314.87
7.3.40.0090.00614.65
7.3.30.0020.01214.67
7.3.20.0110.00616.63
7.3.10.0070.00516.53
7.3.00.0060.00816.49
7.2.330.0040.01316.55
7.2.320.0030.01416.59
7.2.310.0120.00316.56
7.2.300.0140.00716.55
7.2.290.0180.00316.73
7.2.260.0100.01014.83
7.2.250.0020.01814.76
7.2.240.0060.01014.88
7.2.230.0050.01114.49
7.2.220.0060.00714.92
7.2.210.0040.01215.03
7.2.200.0070.00814.87
7.2.190.0060.00614.89
7.2.180.0050.00914.90
7.2.170.0080.00714.82
7.2.160.0120.00614.85
7.2.150.0060.00916.80
7.2.140.0030.00616.78
7.2.130.0070.00716.67
7.2.120.0090.00616.61
7.2.110.0040.01116.82
7.2.100.0030.01416.53
7.2.90.0040.00716.88
7.2.80.0040.00716.76
7.2.70.0130.00016.84
7.2.60.0030.00916.83
7.2.50.0070.01016.68
7.2.40.0060.00316.85
7.2.30.0070.00716.70
7.2.20.0070.00716.84
7.2.10.0090.00616.46
7.2.00.0060.00717.87
7.1.330.0080.00715.84
7.1.320.0090.00315.61
7.1.310.0050.00815.78
7.1.300.0050.00915.57
7.1.290.0050.00615.59
7.1.280.0080.00515.67
7.1.270.0050.01115.68
7.1.260.0040.00715.82
7.1.250.0030.00715.67
7.1.240.0080.00415.71
7.1.230.0060.00615.40
7.1.220.0000.01015.79
7.1.210.0060.00315.81
7.1.200.0050.00415.61
7.1.190.0040.00415.76
7.1.180.0100.00315.59
7.1.170.0120.00315.77
7.1.160.0030.00615.48
7.1.150.0000.01115.68
7.1.140.0070.01115.50
7.1.130.0100.00315.65
7.1.120.0070.01015.92
7.1.110.0060.00615.66
7.1.100.0440.01015.74
7.1.90.0080.00415.70
7.1.80.0000.00915.72
7.1.70.0070.00916.29
7.1.60.0060.01317.53
7.1.50.0040.01016.33
7.1.40.0060.00915.89
7.1.30.0070.01015.87
7.1.20.0140.00015.39
7.1.10.0040.00815.84
7.1.00.0070.04019.01
7.0.330.0070.00615.50
7.0.320.0110.00015.48
7.0.310.0030.01415.38
7.0.300.0000.00915.43
7.0.290.0030.00915.18
7.0.280.0000.00815.16
7.0.270.0100.00315.29
7.0.260.0000.00915.18
7.0.250.0030.00715.23
7.0.240.0120.00315.45
7.0.230.0000.01715.50
7.0.220.0150.00015.55
7.0.210.0060.01015.36
7.0.200.0040.00716.14
7.0.190.0100.00315.21
7.0.180.0070.01115.35
7.0.170.0100.00315.50
7.0.160.0000.01415.38
7.0.150.0070.00715.34
7.0.140.0070.02218.70
7.0.130.0040.00715.25
7.0.120.0110.00715.46
7.0.110.0060.00615.29
7.0.100.0110.00615.21
7.0.90.0040.01115.43
7.0.80.0070.00415.53
7.0.70.0070.00415.16
7.0.60.0060.02217.66
7.0.50.0070.04516.67
7.0.40.0060.04616.75
7.0.30.0250.03216.76
7.0.20.0140.03716.72
7.0.10.0070.04416.79
7.0.00.0070.04516.83
5.6.400.0030.01014.18
5.6.390.0060.00614.35
5.6.380.0070.00714.01
5.6.370.0030.00614.28
5.6.360.0030.01314.13
5.6.350.0090.00314.35
5.6.340.0040.00714.42
5.6.330.0040.01214.22
5.6.320.0030.01013.82
5.6.310.0070.01014.30
5.6.300.0000.00914.23
5.6.290.0030.01013.73
5.6.280.0030.04417.72
5.6.270.0110.00413.90
5.6.260.0090.00614.40
5.6.250.0060.00914.39
5.6.240.0070.00714.30
5.6.230.0070.00714.29
5.6.220.0120.00314.26
5.6.210.0030.04617.42
5.6.200.0060.03516.26
5.6.190.0120.03517.36
5.6.180.1810.02317.41
5.6.170.0150.03517.36
5.6.160.0110.02517.33
5.6.150.0110.04316.19
5.6.140.0080.04516.13
5.6.130.0050.02316.22
5.6.120.0110.01817.58
5.6.110.0060.02417.54
5.6.100.0050.04517.70
5.6.90.0050.02717.72
5.6.80.0070.04117.17
5.6.70.0180.03817.25
5.6.60.0060.00614.04
5.6.50.0120.00313.86
5.6.40.0030.01114.17
5.6.30.0040.00914.27
5.6.20.0000.01513.95
5.6.10.0000.00914.07
5.6.00.0060.00913.99
5.5.380.0070.00713.77
5.5.370.0090.00613.92
5.5.360.0030.00914.26
5.5.350.0000.04517.11
5.5.340.0050.02516.13
5.5.330.0080.04317.17
5.5.320.0120.03717.29
5.5.310.0150.04617.18
5.5.300.0070.02316.15
5.5.290.0080.04116.04
5.5.280.0180.03317.31
5.5.270.0100.03217.52
5.5.260.0040.03917.39
5.5.250.0080.04517.42
5.5.240.0080.04017.11
5.5.230.0100.00314.08
5.5.220.0090.00613.82
5.5.210.0030.00614.12
5.5.200.0030.01014.03
5.5.190.0110.00414.14
5.5.180.0090.00914.02
5.5.170.0030.00914.30
5.5.160.0000.01414.02
5.5.150.0100.00713.98
5.5.140.0090.00013.94
5.5.130.0060.01014.14
5.5.120.0070.00714.23
5.5.110.0050.00514.17
5.5.100.0100.00613.88
5.5.90.0130.00313.96
5.5.80.0040.00813.84
5.5.70.0000.01514.24
5.5.60.0110.00314.07
5.5.50.0040.00413.78
5.5.40.0000.01313.81
5.5.30.0120.00313.65
5.5.20.0030.01014.27
5.5.10.0030.00613.83
5.5.00.0030.00713.89
5.4.450.0120.03015.39
5.4.440.0450.03715.29
5.4.430.0400.02915.18
5.4.420.0330.03015.38
5.4.410.0070.03815.28
5.4.400.0380.02915.17
5.4.390.0100.03714.79
5.4.380.0150.02514.92
5.4.370.0130.02714.89
5.4.360.0160.02614.90
5.4.350.0150.02714.93
5.4.340.0040.03514.80
5.4.330.0040.00411.08
5.4.320.0110.02814.95
5.4.310.0070.03314.95
5.4.300.0100.03114.94
5.4.290.0160.02214.78
5.4.280.0100.03014.88
5.4.270.0090.03014.91
5.4.260.0170.02314.77
5.4.250.0140.02614.89
5.4.240.0130.02914.94
5.4.230.0150.02314.90
5.4.220.0080.03114.79
5.4.210.0150.02514.90
5.4.200.0100.03113.79
5.4.190.0030.03314.75
5.4.180.0130.02514.78
5.4.170.0120.02714.77
5.4.160.0070.03114.83
5.4.150.0140.02514.76
5.4.140.0100.02713.66
5.4.130.0090.02513.61
5.4.120.0100.02713.70
5.4.110.0130.02513.70
5.4.100.0160.02213.64
5.4.90.0130.02513.75
5.4.80.0080.02813.70
5.4.70.0190.02013.63
5.4.60.0070.02813.69
5.4.50.0160.02113.74
5.4.40.0070.03213.66
5.4.30.0160.02013.60
5.4.20.0120.02913.66
5.4.10.0090.02913.68
5.4.00.0120.02613.41
5.3.290.0230.05314.68
5.3.280.0230.04314.77
5.3.270.0230.04714.62
5.3.260.0300.04314.70
5.3.250.0170.05714.77
5.3.240.0130.05314.64
5.3.230.0200.04714.72
5.3.220.0230.04714.77
5.3.210.0170.05314.67
5.3.200.0130.05014.69
5.3.190.0170.05014.79
5.3.180.0170.05014.69
5.3.170.0200.05014.72
5.3.160.0270.04714.54
5.3.150.0230.04714.66
5.3.140.0230.04314.60
5.3.130.0170.05314.57
5.3.120.0070.07314.68
5.3.110.0200.05014.77
5.3.100.0170.05314.22
5.3.90.0030.06314.22
5.3.80.0070.06014.05
5.3.70.0230.04313.99
5.3.60.0270.04014.04
5.3.50.0170.05013.94
5.3.40.0200.04714.07
5.3.30.0130.05014.00
5.3.20.0130.05313.80
5.3.10.0170.04713.76
5.3.00.0030.06313.73
5.2.170.0100.04311.18
5.2.160.0170.03711.26
5.2.150.0130.04311.20
5.2.140.0130.04311.27
5.2.130.0100.04311.12
5.2.120.0130.04011.22
5.2.110.0130.04011.07
5.2.100.0170.03311.20
5.2.90.0070.04711.17
5.2.80.0070.04711.18
5.2.70.0170.04011.14
5.2.60.0100.04311.09
5.2.50.0130.04011.22
5.2.40.0170.03711.03
5.2.30.0130.03711.11
5.2.20.0130.03711.07
5.2.10.0130.03710.99
5.2.00.0170.03710.76
5.1.60.0100.04710.10
5.1.50.0070.03710.03
5.1.40.0130.0309.97
5.1.30.0030.04310.35
5.1.20.0130.03310.39
5.1.10.0170.03010.09
5.1.00.0100.03710.10
5.0.50.0070.0308.57
5.0.40.0070.0278.43
5.0.30.0130.0378.39
5.0.20.0070.0278.27
5.0.10.0070.0278.21
5.0.00.0100.0408.20
4.4.90.0030.0235.89
4.4.80.0100.0175.89
4.4.70.0030.0235.95
4.4.60.0070.0235.88
4.4.50.0070.0206.01
4.4.40.0030.0375.91
4.4.30.0030.0235.95
4.4.20.0000.0275.93
4.4.10.0000.0275.95
4.4.00.0100.0335.93
4.3.110.0100.0175.95
4.3.100.0030.0235.82
4.3.90.0130.0135.87
4.3.80.0070.0335.79
4.3.70.0070.0205.79
4.3.60.0030.0235.80
4.3.50.0070.0205.87
4.3.40.0130.0275.79
4.3.30.0070.0204.59
4.3.20.0070.0204.52
4.3.10.0030.0204.53
4.3.00.0030.0207.23

preferences:
54.12 ms | 400 KiB | 5 Q