3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); $b = &$a; $a[] = $a; $b[] = $b; var_dump($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)
8.3.40.0110.00418.70
8.3.30.0070.01118.54
8.3.20.0000.00918.61
8.3.10.0050.00318.55
8.3.00.0050.00519.26
8.2.170.0110.00422.96
8.2.160.0070.01018.93
8.2.150.0030.00624.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0040.00420.94
8.2.110.0000.00922.06
8.2.100.0070.00717.78
8.2.90.0040.00420.47
8.2.80.0000.00818.05
8.2.70.0000.00817.93
8.2.60.0040.00418.22
8.2.50.0040.00418.10
8.2.40.0050.00219.30
8.2.30.0040.00419.09
8.2.20.0060.00317.62
8.2.10.0040.00417.52
8.2.00.0070.00017.50
8.1.270.0080.00023.99
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0030.00623.84
8.1.230.0120.00420.69
8.1.220.0050.00317.74
8.1.210.0050.00219.04
8.1.200.0060.00317.10
8.1.190.0060.00317.10
8.1.180.0060.00318.10
8.1.170.0040.00418.53
8.1.160.0000.00818.99
8.1.150.0040.00418.66
8.1.140.0000.00717.25
8.1.130.0030.00517.30
8.1.120.0040.00417.30
8.1.110.0080.00017.22
8.1.100.0040.00417.26
8.1.90.0000.00817.34
8.1.80.0000.00717.44
8.1.70.0040.00417.28
8.1.60.0040.00417.39
8.1.50.0070.00017.50
8.1.40.0000.00817.46
8.1.30.0040.00417.57
8.1.20.0050.00317.64
8.1.10.0040.00417.39
8.1.00.0040.00417.41
8.0.300.0030.00319.94
8.0.290.0050.00316.63
8.0.280.0000.00718.41
8.0.270.0030.00317.19
8.0.260.0060.00016.74
8.0.250.0070.00016.88
8.0.240.0000.00816.88
8.0.230.0040.00416.79
8.0.220.0070.00016.80
8.0.210.0030.00316.78
8.0.200.0040.00416.89
8.0.190.0000.00716.90
8.0.180.0030.00616.77
8.0.170.0000.00816.78
8.0.160.0040.00416.70
8.0.150.0000.00916.82
8.0.140.0040.00416.63
8.0.130.0030.00313.24
8.0.120.0000.00916.61
8.0.110.0070.00016.79
8.0.100.0070.00016.66
8.0.90.0000.00816.85
8.0.80.0030.01216.79
8.0.70.0000.00716.68
8.0.60.0030.00516.86
8.0.50.0030.00516.64
8.0.30.0130.00716.95
8.0.20.0120.00817.01
8.0.10.0060.00316.79
8.0.00.0110.00716.72
7.4.330.0000.00512.91
7.4.320.0000.00616.59
7.4.300.0030.00316.45
7.4.290.0000.00716.47
7.4.280.0030.00616.60
7.4.270.0030.00316.35
7.4.260.0030.00313.26
7.4.250.0070.00016.47
7.4.240.0040.00416.50
7.4.230.0040.00416.64
7.4.220.0040.01516.63
7.4.210.0040.01116.62
7.4.200.0000.00716.68
7.4.190.0040.00416.63
7.4.160.0180.00316.34
7.4.150.0120.00616.51
7.4.140.0110.00617.86
7.4.130.0100.01016.26
7.4.120.0060.01216.40
7.4.110.0070.01016.63
7.4.100.0060.01216.57
7.4.90.0060.01216.61
7.4.80.0140.00316.48
7.4.70.0110.00516.40
7.4.60.0060.01616.34
7.4.50.0060.00316.37
7.4.40.0060.01216.62
7.4.30.0100.00916.41
7.4.00.0060.00914.75
7.3.330.0060.00013.09
7.3.320.0050.00013.07
7.3.310.0080.00016.32
7.3.300.0000.00616.16
7.3.290.0060.01016.28
7.3.280.0070.01116.27
7.3.270.0090.00916.23
7.3.260.0060.01116.43
7.3.240.0030.01316.52
7.3.230.0070.01716.32
7.3.210.0030.01316.24
7.3.200.0040.01316.36
7.3.190.0100.01116.55
7.3.180.0120.00616.18
7.3.170.0070.01116.23
7.3.160.0030.01216.30
7.3.120.0060.01014.84
7.3.110.0070.01014.71
7.3.100.0090.00614.43
7.3.90.0100.00715.13
7.3.80.0070.01015.02
7.3.70.0070.00714.77
7.3.60.0000.01214.96
7.3.50.0100.00314.68
7.3.40.0040.00714.63
7.3.30.0120.00314.77
7.3.20.0040.01416.70
7.3.10.0000.01116.43
7.3.00.0030.01016.56
7.2.330.0130.00616.48
7.2.320.0150.00316.64
7.2.310.0060.01116.59
7.2.300.0130.00316.69
7.2.290.0030.01616.71
7.2.240.0040.01515.07
7.2.230.0090.00315.16
7.2.220.0130.00314.89
7.2.210.0030.00914.89
7.2.200.0070.00715.06
7.2.190.0060.00615.09
7.2.180.0100.00314.95
7.2.170.0070.00714.82
7.2.160.0060.00914.91
7.2.150.0000.01316.99
7.2.140.0030.00916.91
7.2.130.0000.01417.06
7.2.120.0100.00616.94
7.2.110.0060.00916.84
7.2.100.0070.00716.88
7.2.90.0040.01517.11
7.2.80.0080.00816.61
7.2.70.0040.01117.02
7.2.60.0030.01217.13
7.2.50.0100.00316.78
7.2.40.0000.01816.91
7.2.30.0070.01116.92
7.2.20.0060.00316.92
7.2.10.0000.01016.75
7.2.00.0100.00417.99
7.1.330.0040.01415.54
7.1.320.0000.00915.80
7.1.310.0060.00615.67
7.1.300.0030.01015.76
7.1.290.0040.00815.46
7.1.280.0030.01315.52
7.1.270.0100.00715.65
7.1.260.0040.01115.79
7.1.250.0030.01015.64
7.1.100.0030.01018.19
7.1.70.0000.01016.96
7.1.60.0100.01619.25
7.1.50.0110.01416.73
7.1.00.0000.04322.28
7.0.200.0070.00316.81
7.0.140.0100.06722.04
7.0.120.0070.06022.09
7.0.60.0070.03720.06
7.0.50.0130.07317.66
7.0.40.0100.06317.69
7.0.30.0030.07717.69
7.0.20.0030.08017.76
7.0.10.0070.07717.73
7.0.00.0070.08317.84
5.6.280.0070.07321.14
5.6.210.0030.04020.71
5.6.200.0130.07318.15
5.6.190.0070.08318.20
5.6.180.0000.04318.12
5.6.170.0130.04718.11
5.6.160.0070.05018.14
5.6.150.0030.05018.18
5.6.140.0030.04718.22
5.6.130.0100.08018.11
5.6.120.0070.04018.16
5.6.110.0130.07718.20
5.6.100.0130.06718.18
5.6.90.0130.08018.06
5.6.80.0030.06717.52
5.6.70.0100.07317.62
5.6.60.0000.04717.49
5.6.50.0070.08017.60
5.6.40.0030.05017.47
5.6.30.0070.04717.57
5.6.20.0070.06317.52
5.6.10.0170.07017.47
5.6.00.0130.07017.47
5.5.350.0030.09020.43
5.5.340.0130.05317.91
5.5.330.0100.07017.96
5.5.320.0070.07017.97
5.5.310.0100.07017.98
5.5.300.0070.08017.98
5.5.290.0130.07717.96
5.5.280.0170.07017.95
5.5.270.0130.08018.00
5.5.260.0130.07318.00
5.5.250.0070.05317.68
5.5.240.0070.07717.31
5.5.230.0100.08017.36
5.5.220.0100.06717.34
5.5.210.0070.08017.33
5.5.200.0030.04017.32
5.5.190.0100.07717.36
5.5.180.0170.07017.30
5.5.160.0070.08017.27
5.5.150.0200.07017.36
5.5.140.0030.06317.25
5.5.130.0100.06317.20
5.5.120.0030.08017.33
5.5.110.0070.08317.31
5.5.100.0000.05317.14
5.5.90.0230.04717.21
5.5.80.0100.07317.27
5.5.70.0130.07017.12
5.5.60.0070.04317.14
5.5.50.0130.06317.15
5.5.40.0100.07317.25
5.5.30.0070.07717.12
5.5.20.0070.07717.20
5.5.10.0100.07717.14
5.5.00.0100.06717.16
5.4.450.0100.04719.29
5.4.440.0100.05319.42
5.4.430.0100.07319.43
5.4.420.0230.07019.31
5.4.410.0170.04719.32
5.4.400.0070.06019.01
5.4.390.0070.06718.95
5.4.380.0130.07019.09
5.4.370.0070.07319.10
5.4.360.0030.07319.01
5.4.350.0200.06319.00
5.4.340.0100.07018.89
5.4.320.0030.05318.98
5.4.310.0170.06719.12
5.4.300.0100.07718.83
5.4.290.0070.06319.00
5.4.280.0130.06718.99
5.4.270.0000.04318.98
5.4.260.0130.05718.98
5.4.250.0070.07319.02
5.4.240.0130.06718.96
5.4.230.0030.08019.02
5.4.220.0030.08018.98
5.4.210.0070.07718.97
5.4.200.0100.05718.94
5.4.190.0070.06318.83
5.4.180.0070.07719.08
5.4.170.0130.07319.06
5.4.160.0130.06719.01
5.4.150.0070.07718.96
5.4.140.0130.06716.34
5.4.130.0000.08316.28
5.4.120.0030.07716.28
5.4.110.0030.07016.28
5.4.100.0170.06316.35
5.4.90.0070.05316.22
5.4.80.0000.08016.39
5.4.70.0100.07316.26
5.4.60.0000.07716.30
5.4.50.0100.06016.14
5.4.40.0070.07016.29
5.4.30.0070.06716.38
5.4.20.0070.07016.14
5.4.10.0070.04016.23
5.4.00.0070.04015.92
5.3.290.0070.07714.63
5.3.280.0100.06314.57
5.3.270.0100.07014.57
5.3.260.0170.06314.57
5.3.250.0030.06714.57
5.3.240.0070.07714.54
5.3.230.0070.08314.58
5.3.220.0100.07014.55
5.3.210.0130.05714.55
5.3.200.0030.08014.34
5.3.190.0000.05314.54
5.3.180.0000.06714.51
5.3.170.0100.05714.38
5.3.160.0130.07014.38
5.3.150.0100.07014.52
5.3.140.0070.05314.54
5.3.130.0100.07314.32
5.3.120.0030.05314.49
5.3.110.0000.05314.47
5.3.100.0100.07014.03
5.3.90.0130.07014.00
5.3.80.0070.03713.86
5.3.70.0030.04713.98
5.3.60.0030.07713.75
5.3.50.0100.06013.87
5.3.40.0130.06713.70
5.3.30.0070.06713.67
5.3.20.0100.07313.66
5.3.10.0000.03713.60
5.3.00.0100.03013.39
5.2.170.0030.04011.11
5.2.160.0130.05311.06
5.2.150.0030.06311.04
5.2.140.0000.06711.13
5.2.130.0100.03710.88
5.2.120.0070.05711.06
5.2.110.0100.02010.88
5.2.100.0000.03011.05
5.2.90.0000.03011.09
5.2.80.0000.03711.01
5.2.70.0000.03010.98
5.2.60.0070.02311.05
5.2.50.0000.03010.97
5.2.40.0030.03310.82
5.2.30.0030.03010.96
5.2.20.0100.02010.92
5.2.10.0000.03010.88
5.2.00.0000.03010.66
5.1.60.0000.0239.95
5.1.50.0000.02710.02
5.1.40.0030.0239.97
5.1.30.0070.02010.25
5.1.20.0030.02310.34
5.1.10.0000.04010.13
5.1.00.0000.02710.03
5.0.50.0130.0078.87
5.0.40.0030.0178.87
5.0.30.0030.0278.87
5.0.20.0000.0208.87
5.0.10.0030.0178.87
5.0.00.0000.0308.87
4.4.90.0030.0138.87
4.4.80.0030.0138.87
4.4.70.0000.0178.87
4.4.60.0030.0138.87
4.4.50.0030.0138.87
4.4.40.0000.0238.87
4.4.30.0000.0178.87
4.4.20.0000.0178.87
4.4.10.0000.0138.87
4.4.00.0000.0308.87
4.3.110.0000.0178.87
4.3.100.0000.0178.87
4.3.90.0000.0208.87
4.3.80.0000.0278.87
4.3.70.0000.0138.87
4.3.60.0030.0138.87
4.3.50.0070.0108.87
4.3.40.0000.0238.87
4.3.30.0000.0138.87
4.3.20.0030.0138.87
4.3.10.0000.0178.87
4.3.00.0000.0138.87

preferences:
57.84 ms | 400 KiB | 5 Q