3v4l.org

run code in 300+ PHP versions simultaneously
<?php function R(&$X, $level) { print "$level X: " . json_encode($X) . "\n"; $A = $X; print "$level A before A: " . json_encode($A) . "\n"; foreach($A as $k => &$value) { $value = $value - 1; print "$level A during A $k: " . json_encode($A) . "\n"; } print "$level A after A: " . json_encode($A) . "\n"; print "$level X after A: " . json_encode($X) . "\n"; $B = $X; print "$level B before B: " . json_encode($B) . "\n"; foreach($B as $k => &$value) { $value = $value + 1; print "$level A during B $k: " . json_encode($A) . "\n"; print "$level B during B $k: " . json_encode($B) . "\n"; } print "$level A after B: " . json_encode($A) . "\n"; print "$level B after B: " . json_encode($B) . "\n"; print "$level X after B: " . json_encode($X) . "\n"; if ($level < 3) { R($B, $level + 1); } } $X = array(1, 2, 3); R($X, 0);

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)
8.4.120.0150.00720.44
8.4.110.0160.00522.79
8.4.100.0090.00817.79
8.4.90.0120.00818.66
8.4.80.0090.00417.60
8.4.70.0060.00417.73
8.4.60.0100.01118.59
8.4.50.0100.00819.30
8.4.40.0130.00717.54
8.4.30.0160.00317.65
8.4.20.0140.00717.51
8.4.10.0030.00717.47
8.3.250.0050.00319.16
8.3.240.0110.00716.57
8.3.230.0060.00816.73
8.3.220.0100.00816.97
8.3.210.0120.00616.73
8.3.200.0030.00716.53
8.3.190.0120.01117.28
8.3.180.0110.00916.41
8.3.170.0030.01619.09
8.3.160.0050.00516.55
8.3.150.0030.00517.32
8.3.140.0090.00318.35
8.3.130.0090.00016.68
8.3.120.0040.00419.07
8.3.110.0060.00316.62
8.3.100.0040.00416.39
8.3.90.0030.00516.42
8.3.80.0050.00518.18
8.3.70.0070.01116.75
8.3.60.0100.01018.52
8.3.50.0150.00421.30
8.3.40.0130.00618.77
8.3.30.0150.00019.01
8.3.20.0070.00020.25
8.3.10.0080.00023.70
8.3.00.0030.00617.50
8.2.290.0060.00220.35
8.2.280.0050.00420.03
8.2.270.0110.00717.11
8.2.260.0080.00018.71
8.2.250.0130.00718.15
8.2.240.0090.00018.76
8.2.230.0170.00320.94
8.2.220.0040.00424.06
8.2.210.0080.00026.77
8.2.200.0030.01016.88
8.2.190.0110.01116.58
8.2.180.0110.00718.18
8.2.170.0120.00322.96
8.2.160.0120.00620.37
8.2.150.0000.00824.18
8.2.140.0110.00724.66
8.2.130.0080.00026.16
8.2.120.0080.00319.18
8.2.110.0030.00620.83
8.2.100.0060.00617.75
8.2.90.0090.00019.27
8.2.80.0030.00617.97
8.2.70.0060.00317.63
8.2.60.0030.00517.80
8.2.50.0050.00318.07
8.2.40.0080.00019.78
8.2.30.0040.00418.16
8.2.20.0080.00017.59
8.2.10.0040.00418.12
8.2.00.0050.00318.16
8.1.330.0130.00720.23
8.1.320.0120.00816.02
8.1.310.0110.00716.62
8.1.300.0090.00619.41
8.1.290.0060.00318.88
8.1.280.0040.01125.92
8.1.270.0040.00420.20
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0090.00023.85
8.1.230.0110.00017.64
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0060.00317.22
8.1.190.0040.00417.23
8.1.180.0080.00018.10
8.1.170.0000.00819.02
8.1.160.0000.00722.05
8.1.150.0000.00918.86
8.1.140.0040.00417.44
8.1.130.0050.00317.91
8.1.120.0040.00417.51
8.1.110.0030.00517.44
8.1.100.0040.00417.55
8.1.90.0000.00717.50
8.1.80.0000.00717.49
8.1.70.0040.00417.47
8.1.60.0080.00017.62
8.1.50.0040.00417.59
8.1.40.0090.00017.61
8.1.30.0000.00817.56
8.1.20.0040.00417.68
8.1.10.0060.00317.63
8.1.00.0030.00517.43
8.0.300.0000.00718.77
8.0.290.0070.00016.63
8.0.280.0030.00318.40
8.0.270.0070.00017.30
8.0.260.0070.00017.30
8.0.250.0000.00716.99
8.0.240.0000.00816.95
8.0.230.0000.00716.91
8.0.220.0000.00717.04
8.0.210.0040.00416.90
8.0.200.0000.00816.98
8.0.190.0070.00317.01
8.0.180.0030.00517.04
8.0.170.0030.00517.08
8.0.160.0030.00517.00
8.0.150.0030.00416.86
8.0.140.0030.00516.84
8.0.130.0030.00313.46
8.0.120.0040.00416.96
8.0.110.0000.00717.05
8.0.100.0070.00016.92
8.0.90.0070.00016.82
8.0.80.0070.01016.95
8.0.70.0030.00517.04
8.0.60.0050.00216.98
8.0.50.0000.00816.95
8.0.30.0090.00717.13
8.0.20.0080.01117.40
8.0.10.0080.00017.02
8.0.00.0130.00516.91
7.4.330.0000.00615.05
7.4.320.0030.00316.54
7.4.300.0030.00316.55
7.4.290.0020.00516.55
7.4.280.0040.00416.55
7.4.270.0070.00016.48
7.4.260.0060.00316.42
7.4.250.0000.00716.61
7.4.240.0000.00716.47
7.4.230.0000.00716.29
7.4.220.0070.01116.50
7.4.210.0100.00516.45
7.4.200.0000.00816.61
7.4.160.0060.01016.37
7.4.150.0100.01017.40
7.4.140.0100.01317.86
7.4.130.0120.00816.55
7.4.120.0100.00916.67
7.4.110.0040.01616.58
7.4.100.0120.00716.51
7.4.90.0070.01016.36
7.4.80.0120.00819.39
7.4.70.0070.01516.48
7.4.60.0130.00316.72
7.4.50.0080.00016.33
7.4.40.0120.01216.77
7.4.30.0110.00616.48
7.4.00.0070.00914.81
7.3.330.0000.00613.23
7.3.320.0170.00013.43
7.3.310.0000.00616.43
7.3.300.0000.00616.26
7.3.290.0070.00016.44
7.3.280.0100.00616.38
7.3.270.0100.00717.40
7.3.260.0070.01116.61
7.3.250.0070.01416.49
7.3.240.0070.01016.43
7.3.230.0130.00616.65
7.3.210.0150.00316.44
7.3.200.0050.01216.30
7.3.190.0060.00916.32
7.3.180.0100.00716.44
7.3.170.0130.01016.28
7.3.160.0040.01816.40
7.3.120.0190.00014.79
7.3.110.0030.01314.73
7.3.100.0040.01115.09
7.3.90.0060.01314.82
7.3.80.0030.00615.00
7.3.70.0070.00714.75
7.3.60.0100.00314.48
7.3.50.0090.00014.80
7.3.40.0100.00614.89
7.3.30.0040.00714.65
7.3.20.0060.00916.55
7.3.10.0030.01416.65
7.3.00.0100.00716.72
7.2.330.0130.00716.64
7.2.320.0090.00916.56
7.2.310.0100.00716.74
7.2.300.0050.01416.78
7.2.290.0060.01616.54
7.2.250.0070.01415.08
7.2.240.0030.01714.93
7.2.230.0040.01215.14
7.2.220.0000.01114.66
7.2.210.0040.01215.06
7.2.200.0070.00715.09
7.2.190.0030.00815.05
7.2.180.0070.00415.06
7.2.170.0070.01015.10
7.2.60.0100.00316.73
7.2.00.0000.01719.48
7.1.330.0090.00615.96
7.1.320.0050.00515.71
7.1.310.0050.00515.89
7.1.300.0000.01015.81
7.1.290.0040.01215.45
7.1.280.0000.01615.52
7.1.270.0030.01015.77
7.1.260.0030.01215.81
7.1.200.0090.00315.63
7.1.100.0040.00718.23
7.1.70.0050.00317.27
7.1.60.0000.01317.21
7.1.50.0030.02216.78
7.1.00.0070.07022.31
7.0.200.0060.00916.70
7.0.90.0100.07719.98
7.0.80.0070.06319.89
7.0.70.0570.07320.02
7.0.60.0670.08019.98
7.0.50.0430.06720.27
7.0.40.0030.05020.03
7.0.30.0070.04720.14
7.0.20.0100.08020.10
7.0.10.0100.05020.13
7.0.00.0030.08320.07
5.6.280.0070.07021.00
5.6.240.0200.06720.71
5.6.230.0030.06720.70
5.6.220.0070.04320.69
5.6.210.0030.08320.45
5.6.200.0130.07320.96
5.6.190.0100.07320.97
5.6.180.0030.05721.13
5.6.170.0030.05321.04
5.6.160.0030.05021.08
5.6.150.0100.07321.04
5.6.140.0100.06021.10
5.6.130.0170.05020.96
5.6.120.0030.08720.96
5.6.110.0130.08020.95
5.6.100.0070.08320.96
5.6.90.0070.08320.96
5.6.80.0100.07720.34
5.6.70.0170.03720.53
5.6.60.0100.07020.41
5.6.50.0170.05720.50
5.6.40.0070.08020.48
5.6.30.0170.06020.39
5.6.20.0030.07020.32
5.6.10.0030.06720.45
5.6.00.0130.06720.39
5.5.380.0070.07720.39
5.5.370.0070.04320.41
5.5.360.0070.07020.42
5.5.350.0100.07020.44
5.5.340.0070.08320.89
5.5.330.0130.05320.79
5.5.320.0000.05020.93
5.5.310.0200.07320.86
5.5.300.0070.05020.88
5.5.290.0170.07320.73
5.5.280.0070.04720.92
5.5.270.0100.06320.80
5.5.260.0030.07320.74
5.5.250.0000.08320.65
5.5.240.0070.05720.29
5.5.230.0070.07320.04
5.5.220.0100.04320.27
5.5.210.0070.04320.23
5.5.200.0070.04320.30
5.5.190.0070.04020.18
5.5.180.0130.07020.25
5.5.160.0170.06020.10
5.5.150.0100.07720.17
5.5.140.0000.06320.22
5.5.130.0130.06020.23
5.5.120.0100.07320.24
5.5.110.0030.05720.00
5.5.100.0030.08319.97
5.5.90.0070.07720.03
5.5.80.0030.07320.18
5.5.70.0070.07720.05
5.5.60.0030.05320.16
5.5.50.0070.04319.98
5.5.40.0030.08020.08
5.5.30.0100.07720.11
5.5.20.0130.05320.16
5.5.10.0070.07720.06
5.5.00.0100.07720.10
5.4.450.0130.07319.38
5.4.440.0000.04719.38
5.4.430.0170.05019.41
5.4.420.0030.05019.41
5.4.410.0130.07319.29
5.4.400.0170.07019.26
5.4.390.0230.05718.87
5.4.380.0170.06319.12
5.4.370.0100.07319.13
5.4.360.0070.06719.13
5.4.350.0070.04319.14
5.4.340.0100.07719.19
5.4.320.0100.07319.23
5.4.310.0030.08018.84
5.4.300.0030.04719.02
5.4.290.0100.07718.89
5.4.280.0100.03719.05
5.4.270.0070.04319.04
5.4.260.0100.07318.90
5.4.250.0130.06719.04
5.4.240.0170.04718.89
5.4.230.0030.08018.89
5.4.220.0170.07019.04
5.4.210.0070.06718.84
5.4.200.0030.04719.12
5.4.190.0130.06718.87
5.4.180.0070.07719.17
5.4.170.0100.04319.04
5.4.160.0100.07019.00
5.4.150.0030.07319.21
5.4.140.0030.07716.21
5.4.130.0100.07016.41
5.4.120.0070.04716.37
5.4.110.0070.07716.34
5.4.100.0130.07016.52
5.4.90.0000.08316.47
5.4.80.0070.07016.42
5.4.70.0030.07316.42
5.4.60.0100.07016.34
5.4.50.0030.04016.48
5.4.40.0170.06316.53
5.4.30.0130.06316.33
5.4.20.0000.08316.40
5.4.10.0000.05316.31
5.4.00.0100.06715.86
5.3.290.0130.06714.70
5.3.280.0000.05314.55
5.3.270.0030.07314.66
5.3.260.0070.07014.71
5.3.250.0070.07714.55
5.3.240.0130.06314.63
5.3.230.0000.06314.64
5.3.220.0100.07014.54
5.3.210.0130.05714.57
5.3.200.0100.07014.58
5.3.190.0000.08014.71
5.3.180.0100.07314.50
5.3.170.0070.07714.64
5.3.160.0000.08314.57
5.3.150.0100.07014.59
5.3.140.0070.06714.52
5.3.130.0170.06314.55
5.3.120.0070.07314.56
5.3.110.0130.07014.58
5.3.100.0030.07014.08
5.3.90.0130.06714.00
5.3.80.0070.04714.12
5.3.70.0070.07714.10
5.3.60.0070.04014.08
5.3.50.0030.08013.96
5.3.40.0030.06013.97
5.3.30.0100.07013.95
5.3.20.0100.06313.73
5.3.10.0230.06013.58
5.3.00.0000.08013.71
5.2.170.0000.04311.28
5.2.160.0100.03011.30
5.2.150.0100.05711.21
5.2.140.0030.06311.14
5.2.130.0100.03711.04
5.2.120.0030.06311.18
5.2.110.0030.06311.18
5.2.100.0170.04711.13
5.2.90.0030.05711.17
5.2.80.0130.05311.25
5.2.70.0100.06311.00
5.2.60.0030.06010.98
5.2.50.0100.05711.06
5.2.40.0070.06310.94
5.2.30.0100.03710.98
5.2.20.0030.06311.05
5.2.10.0000.05010.93
5.2.00.0030.03310.66
5.1.60.0030.05310.03
5.1.50.0070.05310.05
5.1.40.0100.0509.85
5.1.30.0170.03010.35
5.1.20.0030.03710.50
5.1.10.0070.04010.12
5.1.00.0070.05710.16
5.0.50.0070.0378.57
5.0.40.0000.0508.30
5.0.30.0070.0338.37
5.0.20.0000.0438.32
5.0.10.0000.0338.30
5.0.00.0000.0438.25
4.4.90.0000.0377.37
4.4.80.0030.0237.37
4.4.70.0030.0337.37
4.4.60.0030.0237.37
4.4.50.0030.0337.37
4.4.40.0030.0507.37
4.4.30.0070.0307.37
4.4.20.0030.0337.37
4.4.10.0070.0337.37
4.4.00.0070.0477.37
4.3.110.0000.0407.37
4.3.100.0070.0307.37
4.3.90.0130.0207.37
4.3.80.0030.0577.37
4.3.70.0000.0237.37
4.3.60.0000.0377.37
4.3.50.0000.0377.37
4.3.40.0030.0277.37
4.3.30.0030.0337.37
4.3.20.0030.0277.37
4.3.10.0000.0337.37
4.3.00.0000.0277.37

preferences:
31.35 ms | 403 KiB | 5 Q