3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1); $c =& $a[0]; $b = $a; var_dump($b); unset($c); var_dump($b); $a[0] = 2; var_dump($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)
8.3.40.0100.00718.79
8.3.30.0100.00319.25
8.3.20.0040.00420.16
8.3.10.0040.00422.16
8.3.00.0040.00420.52
8.2.170.0120.00322.96
8.2.160.0070.01119.26
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0160.00326.16
8.2.120.0040.00419.66
8.2.110.0090.00320.53
8.2.100.0000.01119.28
8.2.90.0040.00419.26
8.2.80.0030.00518.04
8.2.70.0080.00017.63
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0000.00718.16
8.2.30.0000.00817.97
8.2.20.0040.00417.66
8.2.10.0040.00417.56
8.2.00.0030.00717.73
8.1.270.0040.00418.38
8.1.260.0080.00026.35
8.1.250.0050.00328.09
8.1.240.0030.00723.97
8.1.230.0080.00319.10
8.1.220.0040.00417.79
8.1.210.0040.00418.77
8.1.200.0060.00317.25
8.1.190.0000.00917.55
8.1.180.0000.00820.34
8.1.170.0000.00818.46
8.1.160.0030.00322.14
8.1.150.0040.00418.63
8.1.140.0000.00717.40
8.1.130.0070.00017.83
8.1.120.0030.00417.45
8.1.110.0050.00517.35
8.1.100.0000.00717.42
8.1.90.0040.00417.40
8.1.80.0070.00017.30
8.1.70.0030.00317.36
8.1.60.0060.00317.52
8.1.50.0000.00717.47
8.1.40.0080.00017.46
8.1.30.0040.00417.42
8.1.20.0000.00817.66
8.1.10.0040.00417.60
8.1.00.0060.00317.58
8.0.300.0040.00418.77
8.0.290.0000.00717.05
8.0.280.0000.00718.37
8.0.270.0040.00417.14
8.0.260.0000.00716.75
8.0.250.0040.00416.92
8.0.240.0040.00416.73
8.0.230.0030.00316.90
8.0.220.0000.00716.72
8.0.210.0000.00816.74
8.0.200.0000.00616.83
8.0.190.0040.00416.93
8.0.180.0000.00716.74
8.0.170.0000.00716.87
8.0.160.0030.00516.75
8.0.150.0040.00416.73
8.0.140.0000.00716.78
8.0.130.0030.00313.22
8.0.120.0040.00416.79
8.0.110.0000.00716.71
8.0.100.0040.00416.82
8.0.90.0000.00716.78
8.0.80.0060.01316.83
8.0.70.0040.00416.84
8.0.60.0000.00816.61
8.0.50.0080.00016.71
8.0.30.0100.01316.88
8.0.20.0120.01017.40
8.0.10.0000.00716.81
8.0.00.0140.00916.75
7.4.330.0040.00015.00
7.4.320.0030.00316.58
7.4.300.0000.00616.46
7.4.290.0080.00016.45
7.4.280.0100.00016.43
7.4.270.0000.00716.54
7.4.260.0070.00016.48
7.4.250.0040.00416.52
7.4.240.0060.00216.53
7.4.230.0000.00716.35
7.4.220.0070.01416.48
7.4.210.0100.00616.54
7.4.200.0000.00716.34
7.4.190.0070.00016.71
7.4.160.0030.01316.56
7.4.150.0080.00917.40
7.4.140.0140.00817.86
7.4.130.0110.00616.49
7.4.120.0140.00416.52
7.4.110.0100.00716.40
7.4.100.0140.00416.35
7.4.90.0100.00716.58
7.4.80.0150.01019.39
7.4.70.0130.00716.38
7.4.60.0030.01616.52
7.4.50.0080.00016.13
7.4.40.0110.00822.77
7.4.30.0100.00616.40
7.4.00.0090.00914.89
7.3.330.0000.00513.04
7.3.320.0000.00513.09
7.3.310.0000.00716.23
7.3.300.0030.00316.24
7.3.290.0100.00416.23
7.3.280.0070.01116.20
7.3.270.0130.00317.40
7.3.260.0130.01016.46
7.3.250.0030.01416.40
7.3.240.0120.00616.08
7.3.230.0100.01316.39
7.3.210.0110.00516.63
7.3.200.0070.01019.39
7.3.190.0120.00616.14
7.3.180.0000.01516.50
7.3.170.0080.00816.41
7.3.160.0030.01216.39
7.3.120.0100.00614.92
7.3.110.0080.01014.66
7.3.100.0110.00814.91
7.3.90.0080.00914.87
7.3.80.0110.00314.79
7.3.70.0060.00614.84
7.3.60.0050.00514.83
7.3.50.0030.01114.88
7.3.40.0060.00614.86
7.3.30.0050.00714.84
7.3.20.0090.00716.67
7.3.10.0060.00616.58
7.3.00.0040.00916.39
7.2.330.0060.01216.49
7.2.320.0050.01616.33
7.2.310.0110.00616.44
7.2.300.0120.00916.44
7.2.290.0100.00616.29
7.2.250.0080.01014.97
7.2.240.0080.01114.95
7.2.230.0070.01215.12
7.2.220.0050.00814.88
7.2.210.0030.01214.79
7.2.200.0030.01014.98
7.2.190.0030.01014.96
7.2.180.0050.00914.92
7.2.170.0040.00814.86
7.2.160.0030.00715.04
7.2.150.0090.00616.88
7.2.140.0130.00016.89
7.2.130.0070.00716.93
7.2.120.0080.00416.82
7.2.110.0030.01016.94
7.2.100.0040.01117.04
7.2.90.0100.00716.95
7.2.80.0070.00416.83
7.2.70.0120.00317.01
7.2.60.0060.01016.97
7.2.50.0030.00716.58
7.2.40.0070.00716.80
7.2.30.0060.00916.91
7.2.20.0090.00616.58
7.2.10.0030.01016.70
7.2.00.0050.01318.03
7.1.330.0030.01215.91
7.1.320.0020.01115.55
7.1.310.0090.00315.66
7.1.300.0040.00715.81
7.1.290.0070.00715.73
7.1.280.0090.00315.91
7.1.270.0050.00815.85
7.1.260.0020.01015.69
7.1.250.0070.00715.55
7.1.240.0120.00315.53
7.1.230.0070.00315.95
7.1.220.0030.00715.72
7.1.210.0070.00715.74
7.1.200.0070.00415.56
7.1.190.0030.01015.81
7.1.180.0090.00615.94
7.1.170.0040.00815.73
7.1.160.0030.01216.01
7.1.150.0100.00315.83
7.1.140.0030.01015.85
7.1.130.0040.01215.90
7.1.120.0090.00615.99
7.1.110.0100.00715.85
7.1.100.0060.00617.09
7.1.90.0000.01115.76
7.1.80.0090.00615.72
7.1.70.0060.00416.39
7.1.60.0090.01017.82
7.1.50.0080.00725.16
7.1.40.0000.01615.81
7.1.30.0070.00715.68
7.1.20.0090.00015.82
7.1.10.0000.01515.61
7.1.00.0030.03818.95
7.0.330.0000.01115.59
7.0.320.0030.01015.25
7.0.310.0030.00715.25
7.0.300.0040.00815.13
7.0.290.0060.00915.53
7.0.280.0040.00815.44
7.0.270.0040.00815.58
7.0.260.0030.01015.46
7.0.250.0040.00415.44
7.0.240.0040.00715.64
7.0.230.0000.01115.45
7.0.220.0060.00915.19
7.0.210.0000.01615.64
7.0.200.0050.00716.07
7.0.190.0070.00715.24
7.0.180.0070.00715.42
7.0.170.0060.01015.53
7.0.160.0030.00615.48
7.0.150.0070.00315.07
7.0.140.0030.04018.69
7.0.130.0040.00715.57
7.0.120.0060.00915.14
7.0.110.0030.00515.32
7.0.100.0040.02417.65
7.0.90.0050.03217.66
7.0.80.0110.02217.72
7.0.70.0170.03717.56
7.0.60.0170.04217.68
7.0.50.0100.03617.71
7.0.40.0070.02017.46
7.0.30.0100.03317.49
7.0.20.0100.03817.47
7.0.10.0100.03717.48
7.0.00.0120.04017.48
5.6.400.0070.00414.84
5.6.390.0100.00714.84
5.6.380.0000.01714.84
5.6.370.0060.00914.84
5.6.360.0030.01014.84
5.6.350.0100.00314.84
5.6.340.0030.01014.84
5.6.330.0080.00314.84
5.6.320.0060.00314.84
5.6.310.0000.01214.84
5.6.300.0030.01014.84
5.6.290.0070.00714.84
5.6.280.0030.04317.97
5.6.270.0040.00714.84
5.6.260.0070.00714.84
5.6.250.0040.02417.75
5.6.240.0140.01717.76
5.6.230.0070.03017.67
5.6.220.0110.02517.72
5.6.210.0080.04317.74
5.6.200.0060.03217.96
5.6.190.0050.02117.97
5.6.180.0070.03817.94
5.6.170.0030.02517.99
5.6.160.0060.02517.93
5.6.150.0080.02517.97
5.6.140.0050.03617.88
5.6.130.0100.02117.92
5.6.120.0080.03817.93
5.6.110.0060.04617.96
5.6.100.0090.02417.92
5.6.90.0050.02417.87
5.6.80.0050.02517.66
5.6.70.0020.02517.63
5.6.60.0070.02017.64
5.6.50.0020.02417.65
5.6.40.0070.02017.60
5.6.30.0070.03017.58
5.6.20.0080.04217.66
5.6.10.0030.02217.57
5.6.00.0090.03417.63
5.5.380.0050.03717.69
5.5.370.0090.04117.59
5.5.360.0080.04717.60
5.5.350.0030.02317.64
5.5.340.0030.03617.82
5.5.330.0120.02417.86
5.5.320.0070.02417.88
5.5.310.0050.02817.82
5.5.300.0110.03317.82
5.5.290.0030.04817.79
5.5.280.0090.02617.74
5.5.270.0030.03417.87
5.5.260.0120.02317.73
5.5.250.0040.02517.75
5.5.240.0020.03017.53
5.5.230.0090.03317.50
5.5.220.0050.02217.55
5.5.210.0070.02217.43
5.5.200.0090.01817.54
5.5.190.0110.03817.41
5.5.180.0070.03617.52
5.5.170.0060.00914.84
5.5.160.0020.02717.47
5.5.150.0030.03117.47
5.5.140.0050.02517.51
5.5.130.0050.02217.50
5.5.120.0030.02617.49
5.5.110.0080.02717.54
5.5.100.0070.02017.45
5.5.90.0040.02217.42
5.5.80.0100.01817.49
5.5.70.0050.02217.45
5.5.60.0050.02217.46
5.5.50.0060.02317.50
5.5.40.0080.01817.49
5.5.30.0030.02517.44
5.5.20.0030.02617.43
5.5.10.0030.02317.44
5.5.00.0020.02617.43
5.4.450.0030.02517.12
5.4.440.0030.02117.07
5.4.430.0050.03817.11
5.4.420.0020.03017.06
5.4.410.0070.02117.07
5.4.400.0050.02116.94
5.4.390.0050.02316.87
5.4.380.0050.02216.94
5.4.370.0060.01916.82
5.4.360.0050.01916.96
5.4.350.0030.01816.99
5.4.340.0050.01616.91
5.4.330.0070.00314.84
5.4.320.0110.01316.99
5.4.310.0060.01816.94
5.4.300.0060.02316.91
5.4.290.0020.02416.95
5.4.280.0050.01916.96
5.4.270.0040.02016.98
5.4.260.0050.02316.82
5.4.250.0020.02216.95
5.4.240.0070.02116.99
5.4.230.0030.02316.81
5.4.220.0050.02017.03
5.4.210.0060.02516.98
5.4.200.0040.02416.93
5.4.190.0050.01916.96
5.4.180.0020.02416.97
5.4.170.0040.02116.93
5.4.160.0050.02216.96
5.4.150.0020.02316.88
5.4.140.0070.01715.48
5.4.130.0030.02015.58
5.4.120.0010.02415.55
5.4.110.0030.02615.63
5.4.100.0050.01815.57
5.4.90.0070.01515.64
5.4.80.0030.02115.64
5.4.70.0050.02215.52
5.4.60.0030.04315.52
5.4.50.0050.02015.57
5.4.40.0060.02615.56
5.4.30.0060.02015.57
5.4.20.0100.03515.57
5.4.10.0030.04215.57
5.4.00.0090.03515.35
5.3.290.0050.03514.72
5.3.280.0030.02314.72
5.3.270.0030.01814.71
5.3.260.0000.03814.69
5.3.250.0010.01914.64
5.3.240.0030.02114.72
5.3.230.0030.02014.69
5.3.220.0060.02014.67
5.3.210.0020.02414.63
5.3.200.0050.01814.70
5.3.190.0030.02114.63
5.3.180.0030.02014.68
5.3.170.0020.02314.62
5.3.160.0040.02314.61
5.3.150.0050.02014.62
5.3.140.0070.01514.63
5.3.130.0000.04714.62
5.3.120.0010.02314.67
5.3.110.0070.04014.70
5.3.100.0030.03814.41
5.3.90.0040.02414.41
5.3.80.0070.02514.42
5.3.70.0070.02514.43
5.3.60.0070.03714.42
5.3.50.0050.03514.32
5.3.40.0060.03314.39
5.3.30.0080.02014.36
5.3.20.0020.02214.25
5.3.10.0060.03814.23
5.3.00.0080.03114.23
5.2.170.0030.04711.09
5.2.160.0000.03311.06
5.2.150.0070.06011.13
5.2.140.0030.05311.07
5.2.130.0030.02711.08
5.2.120.0070.04011.05
5.2.110.0030.05711.04
5.2.100.0070.02710.96
5.2.90.0000.03711.06
5.2.80.0000.03010.94
5.2.70.0070.04010.91
5.2.60.0070.04311.10
5.2.50.0100.05710.94
5.2.40.0000.04711.02
5.2.30.0000.03010.96
5.2.20.0030.03710.80
5.2.10.0070.05310.71
5.2.00.0000.04010.76
5.1.60.0000.0309.87
5.1.50.0030.05310.02
5.1.40.0000.0609.95
5.1.30.0000.05710.28
5.1.20.0070.05310.26
5.1.10.0000.0539.92
5.1.00.0030.05710.10
5.0.50.0000.0379.34
5.0.40.0000.0409.34
5.0.30.0100.0579.34
5.0.20.0000.0409.34
5.0.10.0070.0309.34
5.0.00.0070.0639.34
4.4.90.0030.0209.34
4.4.80.0000.0379.34
4.4.70.0000.0209.34
4.4.60.0030.0379.34
4.4.50.0000.0379.34
4.4.40.0070.0279.34
4.4.30.0000.0279.34
4.4.20.0030.0339.34
4.4.10.0000.0379.34
4.4.00.0030.0509.34
4.3.110.0070.0139.34
4.3.100.0070.0279.34
4.3.90.0000.0379.34
4.3.80.0000.0509.34
4.3.70.0070.0139.34
4.3.60.0030.0339.34
4.3.50.0100.0309.34
4.3.40.0070.0509.34
4.3.30.0000.0379.34
4.3.20.0070.0279.34
4.3.10.0030.0209.34
4.3.00.0000.0379.34

preferences:
41.36 ms | 400 KiB | 5 Q