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); } } $X = array(10, 20, 30); R($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)
8.4.120.0130.00722.19
8.4.110.0130.00818.80
8.4.100.0110.01018.00
8.4.90.0120.00918.68
8.4.80.0060.00218.02
8.4.70.0100.01018.98
8.4.60.0120.00918.91
8.4.50.0150.00619.35
8.4.40.0100.01017.73
8.4.30.0130.00717.81
8.4.20.0110.00817.79
8.4.10.0060.00317.30
8.3.250.0130.00718.92
8.3.240.0030.00516.56
8.3.230.0110.00916.50
8.3.220.0090.00917.20
8.3.210.0090.01218.20
8.3.200.0030.00516.57
8.3.190.0120.00817.06
8.3.180.0040.00516.60
8.3.170.0100.01017.14
8.3.160.0100.01018.38
8.3.150.0090.00620.56
8.3.140.0040.00416.55
8.3.130.0030.00718.52
8.3.120.0130.00618.77
8.3.110.0060.00320.94
8.3.100.0070.00424.06
8.3.90.0030.00626.77
8.3.80.0030.00616.50
8.3.70.0190.00316.58
8.3.60.0190.00318.30
8.3.50.0140.00522.06
8.3.40.0190.00018.47
8.3.30.0120.00319.07
8.3.20.0070.00020.25
8.3.10.0000.00823.71
8.3.00.0080.00017.63
8.2.290.0130.00520.17
8.2.280.0110.00718.26
8.2.270.0070.01117.18
8.2.260.0040.00417.99
8.2.250.0100.01016.52
8.2.240.0030.00617.36
8.2.230.0060.00322.58
8.2.220.0030.00737.54
8.2.210.0040.00426.77
8.2.200.0000.01218.29
8.2.190.0190.00018.41
8.2.180.0040.01525.92
8.2.170.0140.00018.74
8.2.160.0130.00022.96
8.2.150.0000.00825.66
8.2.140.0030.00624.66
8.2.130.0060.00326.16
8.2.120.0040.00419.45
8.2.110.0090.00020.96
8.2.100.0090.00317.88
8.2.90.0050.00319.28
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0040.00418.05
8.2.50.0040.00418.07
8.2.40.0000.00820.01
8.2.30.0040.00418.02
8.2.20.0120.00017.86
8.2.10.0040.00418.12
8.2.00.0040.00418.14
8.1.330.0120.00722.01
8.1.320.0100.01116.03
8.1.310.0140.00416.87
8.1.300.0090.00019.53
8.1.290.0000.01330.84
8.1.280.0070.01025.92
8.1.270.0000.00820.10
8.1.260.0000.00826.35
8.1.250.0050.00328.09
8.1.240.0000.00923.80
8.1.230.0080.00417.66
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0060.00317.22
8.1.190.0060.00317.35
8.1.180.0040.00418.10
8.1.170.0040.00418.88
8.1.160.0020.00522.05
8.1.150.0000.00818.92
8.1.140.0040.00417.52
8.1.130.0030.00317.91
8.1.120.0000.00717.56
8.1.110.0050.00217.47
8.1.100.0040.00417.40
8.1.90.0080.00017.48
8.1.80.0070.00017.47
8.1.70.0030.00517.57
8.1.60.0000.00917.67
8.1.50.0030.00517.56
8.1.40.0060.00317.41
8.1.30.0060.00317.51
8.1.20.0000.00817.55
8.1.10.0040.00417.42
8.1.00.0040.00417.49
8.0.300.0050.00318.77
8.0.290.0000.00716.75
8.0.280.0030.00318.36
8.0.270.0000.00717.29
8.0.260.0000.00817.29
8.0.250.0030.00316.99
8.0.240.0040.00717.04
8.0.230.0030.00417.02
8.0.220.0000.00817.03
8.0.210.0000.00817.05
8.0.200.0030.00317.06
8.0.190.0070.00416.99
8.0.180.0040.00417.08
8.0.170.0040.00416.92
8.0.160.0050.00317.01
8.0.150.0040.00417.02
8.0.140.0080.00016.83
8.0.130.0000.00513.34
8.0.120.0040.00416.97
8.0.110.0040.00416.93
8.0.100.0070.00016.92
8.0.90.0050.00316.87
8.0.80.0100.00616.96
8.0.70.0050.00216.90
8.0.60.0030.00516.86
8.0.50.0040.00417.01
8.0.30.0140.01217.22
8.0.20.0070.01417.40
8.0.10.0000.00717.03
8.0.00.0100.00916.84
7.4.330.0050.00015.03
7.4.320.0070.00016.57
7.4.300.0000.00716.63
7.4.290.0070.00016.54
7.4.280.0000.00816.52
7.4.270.0030.00516.55
7.4.260.0080.00216.50
7.4.250.0040.00416.41
7.4.240.0030.00316.55
7.4.230.0000.00716.47
7.4.220.0070.01116.71
7.4.210.0080.00816.58
7.4.200.0040.00416.29
7.4.160.0120.00416.75
7.4.150.0110.00817.40
7.4.140.0130.01117.86
7.4.130.0090.01016.59
7.4.120.0120.00616.55
7.4.110.0090.00916.58
7.4.100.0130.00716.76
7.4.90.0180.00016.58
7.4.80.0090.00919.39
7.4.70.0140.00716.55
7.4.60.0090.00616.51
7.4.50.0080.00016.45
7.4.40.0040.01316.69
7.4.30.0110.01116.68
7.4.00.0070.00714.72
7.3.330.0030.00513.26
7.3.320.0120.00413.35
7.3.310.0040.00416.39
7.3.300.0000.00716.31
7.3.290.0050.00316.34
7.3.280.0120.00716.39
7.3.270.0150.00317.40
7.3.260.0160.00316.42
7.3.250.0120.00816.38
7.3.240.0110.00816.31
7.3.230.0120.01216.71
7.3.210.0100.00716.48
7.3.200.0070.01119.39
7.3.190.0090.01316.70
7.3.180.0060.01016.42
7.3.170.0100.01416.62
7.3.160.0070.01416.44
7.3.10.0030.00816.68
7.3.00.0100.00416.74
7.2.330.0110.00716.80
7.2.320.0090.01516.72
7.2.310.0130.00316.67
7.2.300.0050.01816.76
7.2.290.0100.01416.78
7.2.130.0060.00816.90
7.2.120.0050.00916.79
7.2.110.0110.00316.63
7.2.100.0060.00716.90
7.2.90.0080.00516.87
7.2.80.0070.00716.82
7.2.70.0040.00716.69
7.2.60.0020.00916.76
7.2.50.0040.00916.83
7.2.40.0070.00716.95
7.2.30.0020.00816.83
7.2.20.0050.00616.82
7.2.10.0060.00716.85
7.2.00.0050.00517.68
7.1.250.0030.00815.85
7.1.240.0070.00415.59
7.1.230.0080.00815.72
7.1.220.0060.00315.73
7.1.210.0030.01215.87
7.1.200.0040.00615.65
7.1.190.0140.00015.77
7.1.180.0070.01015.93
7.1.170.0070.00715.71
7.1.160.0100.00315.78
7.1.150.0060.00915.99
7.1.140.0100.00315.48
7.1.130.0030.00615.77
7.1.120.0080.00315.80
7.1.110.0060.00615.64
7.1.100.0060.00616.67
7.1.90.0060.00615.77
7.1.80.0030.00815.73
7.1.70.0030.00716.48
7.1.60.0050.01317.70
7.1.50.0050.01216.51
7.1.40.0030.00915.73
7.1.30.0100.00715.61
7.1.20.0030.01015.81
7.1.10.0110.00415.59
7.1.00.0020.04719.11
7.0.330.0070.00715.43
7.0.320.0050.00315.44
7.0.310.0110.00315.35
7.0.300.0120.00315.36
7.0.290.0110.00315.39
7.0.280.0040.00815.43
7.0.270.0060.00315.48
7.0.260.0060.00615.45
7.0.250.0060.00615.47
7.0.240.0070.00715.53
7.0.230.0070.00415.49
7.0.220.0030.00715.41
7.0.210.0070.00715.50
7.0.200.0020.00916.04
7.0.190.0090.00315.44
7.0.180.0070.00715.52
7.0.170.0070.00315.58
7.0.160.0070.00715.38
7.0.150.0090.00615.24
7.0.140.0060.00915.13
7.0.130.0000.00915.20
7.0.120.0100.00315.36
7.0.110.0040.00815.24
7.0.100.0000.01015.24
7.0.90.0070.02517.58
7.0.80.0090.04517.69
7.0.70.0080.02317.64
7.0.60.0400.04617.74
7.0.50.0270.03217.81
7.0.40.0030.02316.81
7.0.30.0080.03816.86
7.0.20.0080.04716.70
7.0.10.0030.02716.71
7.0.00.0110.04116.68
5.6.380.0100.00314.43
5.6.370.0140.00014.14
5.6.360.0000.00814.04
5.6.350.0070.00314.25
5.6.340.0070.00714.44
5.6.330.0100.00314.39
5.6.320.0030.01014.28
5.6.310.0040.00814.25
5.6.300.0030.00714.61
5.6.290.0040.00814.52
5.6.280.0040.04117.56
5.6.270.0110.00414.61
5.6.260.0030.00614.59
5.6.250.0040.01114.38
5.6.240.0120.04017.51
5.6.230.0070.03517.43
5.6.220.0050.02817.33
5.6.210.0030.04617.40
5.6.200.0070.03517.58
5.6.190.0050.04417.56
5.6.180.0080.04117.70
5.6.170.0020.04617.51
5.6.160.0060.02217.90
5.6.150.0100.04017.77
5.6.140.0070.04217.71
5.6.130.0080.03817.61
5.6.120.0040.05117.66
5.6.110.0090.03717.56
5.6.100.0090.04217.81
5.6.90.0050.04717.68
5.6.80.0120.03917.23
5.6.70.0100.04217.35
5.6.60.0080.03817.43
5.6.50.0080.04317.45
5.6.40.0080.04017.34
5.6.30.0140.03517.23
5.6.20.0060.03117.29
5.6.10.0070.03917.20
5.6.00.0060.02817.18
5.5.380.0130.01615.70
5.5.370.0030.02415.89
5.5.360.0020.02815.77
5.5.350.0060.02015.77
5.5.340.0020.04016.04
5.5.330.0100.01715.97
5.5.320.0080.04315.88
5.5.310.0070.03715.89
5.5.300.0050.02515.97
5.5.290.0080.04215.88
5.5.280.0110.04015.93
5.5.270.0050.04015.98
5.5.260.0100.03715.83
5.5.250.0080.04415.92
5.5.240.0070.04515.53
5.5.230.0100.03215.66
5.5.220.0050.04215.58
5.5.210.0070.04215.66
5.5.200.0030.03315.79
5.5.190.0080.04115.71
5.5.180.0070.04115.69
5.5.170.0020.00511.00
5.5.160.0020.03415.66
5.5.150.0090.04015.61
5.5.140.0080.04015.55
5.5.130.0080.03315.56
5.5.120.0050.03515.67
5.5.110.0020.03515.63
5.5.100.0030.04015.49
5.5.90.0070.04015.62
5.5.80.0100.03415.59
5.5.70.0080.02515.56
5.5.60.0060.03515.61
5.5.50.0030.04415.65
5.5.40.0050.04115.52
5.5.30.0100.02715.67
5.5.20.0000.04615.63
5.5.10.0050.04215.61
5.5.00.0070.02715.51
5.4.450.0130.03415.33
5.4.440.0080.04215.28
5.4.430.0000.02815.18
5.4.420.0080.04315.25
5.4.410.0100.03715.04
5.4.400.0030.02615.14
5.4.390.0100.03815.08
5.4.380.0020.04515.08
5.4.370.0020.02515.13
5.4.360.0050.03915.06
5.4.350.0020.03215.09
5.4.340.0020.04215.10
5.4.330.0080.00011.00
5.4.320.0050.03715.03
5.4.310.0040.04515.12
5.4.300.0020.03515.10
5.4.290.0050.04015.04
5.4.280.0020.03015.11
5.4.270.0050.04015.02
5.4.260.0080.02215.09
5.4.250.0070.02315.07
5.4.240.0050.02315.16
5.4.230.0050.02614.97
5.4.220.0050.04215.12
5.4.210.0070.03915.10
5.4.200.0040.03215.02
5.4.190.0140.02915.07
5.4.180.0050.04215.19
5.4.170.0060.03115.06
5.4.160.0020.02715.09
5.4.150.0090.03714.96
5.4.140.0090.03313.87
5.4.130.0060.03613.79
5.4.120.0110.03813.69
5.4.110.0150.02713.76
5.4.100.0000.02913.87
5.4.90.0050.03813.74
5.4.80.0050.03613.70
5.4.70.0050.03013.66
5.4.60.0080.03513.75
5.4.50.0100.02513.78
5.4.40.0060.03313.88
5.4.30.0050.02813.66
5.4.20.0020.03913.82
5.4.10.0080.03013.75
5.4.00.0020.03213.41
5.3.290.0070.03812.93
5.3.280.0050.02712.88
5.3.270.0050.02212.87
5.3.260.0080.02412.86
5.3.250.0070.02312.87
5.3.240.0050.03912.84
5.3.230.0080.04012.86
5.3.220.0080.03512.76
5.3.210.0060.02412.80
5.3.200.0050.04212.83
5.3.190.0050.03212.83
5.3.180.0100.03512.85
5.3.170.0000.04612.82
5.3.160.0050.03812.76
5.3.150.0010.04012.79
5.3.140.0060.03012.86
5.3.130.0050.04012.79
5.3.120.0080.03812.82
5.3.110.0070.03012.85
5.3.100.0030.04012.59
5.3.90.0050.04212.53
5.3.80.0060.03812.51
5.3.70.0060.03912.54
5.3.60.0030.02412.45
5.3.50.0030.03112.49
5.3.40.0090.02312.50
5.3.30.0060.03712.43
5.3.20.0080.03612.35
5.3.10.0040.03212.35
5.3.00.0030.04012.34
5.2.170.0030.03711.09
5.2.160.0020.03611.13
5.2.150.0050.03011.14
5.2.140.0060.03111.14
5.2.130.0050.03311.09
5.2.120.0100.02711.10
5.2.110.0030.02311.05
5.2.100.0020.03311.13
5.2.90.0010.02911.08
5.2.80.0020.03111.11
5.2.70.0070.03111.01
5.2.60.0020.03110.97
5.2.50.0020.02411.06
5.2.40.0020.03110.97
5.2.30.0060.02810.94
5.2.20.0050.03211.04
5.2.10.0050.03110.95
5.2.00.0020.03710.85
5.1.60.0050.01810.56
5.1.50.0000.02510.51
5.1.40.0050.01510.42
5.1.30.0040.01810.74
5.1.20.0000.01910.66
5.1.10.0020.01510.60
5.1.00.0020.01910.58
5.0.50.0040.0109.79
5.0.40.0030.0109.65
5.0.30.0040.0159.68
5.0.20.0020.0129.61
5.0.10.0020.0139.61
5.0.00.0030.0269.59
4.4.90.0030.0189.05
4.4.80.0020.0199.05
4.4.70.0020.0189.05
4.4.60.0030.0199.05
4.4.50.0030.0189.05
4.4.40.0000.0149.05
4.4.30.0040.0079.05
4.4.20.0000.0119.05
4.4.10.0000.0129.05
4.4.00.0000.0159.05
4.3.110.0020.0129.05
4.3.100.0000.0119.05
4.3.90.0000.0119.05
4.3.80.0000.0149.05
4.3.70.0010.0089.05
4.3.60.0000.0109.05
4.3.50.0020.0089.05
4.3.40.0000.0149.05
4.3.30.0020.0089.05
4.3.20.0020.0129.05
4.3.10.0000.0119.05
4.3.00.0030.0089.05

preferences:
29.9 ms | 403 KiB | 5 Q