3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array('a', 'b'); foreach ($arr as &$a) { var_dump($a); } debug_zval_dump($arr); debug_zval_dump($a); foreach ($arr as $a) { var_dump($a); } debug_zval_dump($arr); debug_zval_dump($a);

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)
8.3.40.0120.00618.73
8.3.30.0120.00318.84
8.3.20.0040.00420.24
8.3.10.0080.00020.54
8.3.00.0030.00619.26
8.2.170.0120.00322.96
8.2.160.0100.00320.41
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0050.00226.16
8.2.120.0080.00022.22
8.2.110.0050.00520.22
8.2.100.0000.01217.72
8.2.90.0000.00819.17
8.2.80.0040.00417.97
8.2.70.0100.00017.38
8.2.60.0000.01018.03
8.2.50.0050.00318.07
8.2.40.0080.00018.19
8.2.30.0040.00419.44
8.2.20.0000.00717.66
8.2.10.0040.00418.12
8.2.00.0040.00417.71
8.1.270.0030.00522.14
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0090.00020.84
8.1.230.0040.00817.81
8.1.220.0030.00717.74
8.1.210.0050.00318.77
8.1.200.0030.00717.35
8.1.190.0000.00817.23
8.1.180.0080.00018.10
8.1.170.0050.00318.44
8.1.160.0040.00421.92
8.1.150.0070.00018.84
8.1.140.0040.00417.46
8.1.130.0000.00717.80
8.1.120.0070.00017.45
8.1.110.0000.00717.45
8.1.100.0000.00817.50
8.1.90.0000.00717.39
8.1.80.0030.00517.35
8.1.70.0000.00817.32
8.1.60.0050.00317.61
8.1.50.0040.00417.50
8.1.40.0040.00417.42
8.1.30.0040.00417.68
8.1.20.0070.00017.51
8.1.10.0000.00717.45
8.1.00.0040.00417.38
8.0.300.0060.00318.77
8.0.290.0000.00716.75
8.0.280.0070.00018.48
8.0.270.0030.00316.71
8.0.260.0030.00317.25
8.0.250.0030.00317.00
8.0.240.0040.00416.92
8.0.230.0070.00016.91
8.0.220.0030.00316.89
8.0.210.0000.00716.77
8.0.200.0040.00416.82
8.0.190.0070.00016.81
8.0.180.0040.00416.82
8.0.170.0040.00416.89
8.0.160.0040.00416.84
8.0.150.0080.00016.76
8.0.140.0040.00416.84
8.0.130.0030.00513.28
8.0.120.0030.00516.84
8.0.110.0040.00416.90
8.0.100.0070.00016.78
8.0.90.0000.00816.78
8.0.80.0000.01516.85
8.0.70.0000.00817.00
8.0.60.0040.00416.95
8.0.50.0040.00416.89
8.0.30.0070.01217.19
8.0.20.0110.00817.40
8.0.10.0070.00017.00
8.0.00.0110.00716.73
7.4.330.0000.00515.03
7.4.320.0000.00716.45
7.4.300.0030.00316.41
7.4.290.0000.00716.45
7.4.280.0030.00516.39
7.4.270.0040.00416.41
7.4.260.0070.00016.55
7.4.250.0040.00416.54
7.4.240.0030.00316.53
7.4.230.0040.00416.52
7.4.220.0140.00516.48
7.4.210.0100.00716.50
7.4.200.0070.00016.68
7.4.160.0060.01016.49
7.4.150.0180.00017.40
7.4.140.0080.01117.86
7.4.130.0090.00816.56
7.4.120.0070.01016.43
7.4.110.0100.00716.43
7.4.100.0130.00516.48
7.4.90.0050.01116.74
7.4.80.0070.01016.41
7.4.70.0070.01016.48
7.4.60.0130.00316.53
7.4.50.0000.00916.45
7.4.40.0100.00616.36
7.4.30.0110.00616.59
7.4.00.0030.01314.68
7.3.330.0020.00213.06
7.3.320.0030.00513.20
7.3.310.0030.00316.20
7.3.300.0030.00316.10
7.3.290.0060.00816.32
7.3.280.0060.01216.21
7.3.270.0090.00917.40
7.3.260.0170.00016.36
7.3.250.0130.00316.44
7.3.240.0110.00616.28
7.3.230.0100.00716.39
7.3.210.0100.00716.40
7.3.200.0180.00319.39
7.3.190.0140.00716.48
7.3.180.0140.00316.54
7.3.170.0070.01616.40
7.3.160.0130.01016.25
7.3.00.0000.01316.42
7.2.330.0040.01216.53
7.2.320.0040.01416.64
7.2.310.0000.01616.54
7.2.300.0140.00316.51
7.2.290.0140.00316.42
7.2.130.0040.00716.60
7.2.120.0090.00616.53
7.2.110.0080.00416.86
7.2.100.0070.00716.91
7.2.90.0040.00816.92
7.2.80.0080.00416.83
7.2.70.0040.01216.93
7.2.60.0050.00816.80
7.2.50.0090.00616.99
7.2.40.0030.00616.86
7.2.30.0080.00416.86
7.2.20.0060.00616.69
7.2.10.0040.00716.83
7.2.00.0080.00618.03
7.1.250.0070.00315.57
7.1.240.0070.00415.77
7.1.230.0070.00715.89
7.1.220.0080.00315.68
7.1.210.0030.00715.62
7.1.200.0060.00515.72
7.1.190.0080.00315.82
7.1.180.0030.01015.44
7.1.170.0040.00715.79
7.1.160.0030.00615.49
7.1.150.0030.00715.70
7.1.140.0100.00015.81
7.1.130.0060.00615.64
7.1.120.0000.01015.77
7.1.110.0030.00915.57
7.1.100.0080.00616.81
7.1.90.0120.00015.89
7.1.80.0060.00315.63
7.1.70.0050.00516.34
7.1.60.0060.01217.55
7.1.50.0050.01116.44
7.1.40.0100.00015.98
7.1.30.0070.00315.59
7.1.20.0000.00915.80
7.1.10.0030.01015.38
7.1.00.0060.04019.10
7.0.330.0040.00715.16
7.0.320.0000.00815.35
7.0.310.0030.00715.11
7.0.300.0040.00415.15
7.0.290.0130.00015.27
7.0.280.0070.00715.04
7.0.270.0000.01015.50
7.0.260.0070.00715.13
7.0.250.0030.00615.22
7.0.240.0070.00415.33
7.0.230.0060.00615.30
7.0.220.0040.01115.39
7.0.210.0030.00615.33
7.0.200.0020.00816.00
7.0.190.0100.00315.35
7.0.180.0030.00615.46
7.0.170.0030.00715.23
7.0.160.0100.00015.39
7.0.150.0030.00615.41
7.0.140.0020.04118.55
7.0.130.0070.00315.45
7.0.120.0060.00615.45
7.0.110.0070.00415.19
7.0.100.0030.00815.35
7.0.90.0070.00715.36
7.0.80.0050.00515.55
7.0.70.0000.00715.08
7.0.60.0150.04217.66
7.0.50.0060.03916.67
7.0.40.0150.03216.74
7.0.30.0180.02616.71
7.0.20.0200.04116.82
7.0.10.0210.04016.69
7.0.00.0220.03816.79
5.6.380.0060.00613.67
5.6.370.0070.00714.29
5.6.360.0000.01413.82
5.6.350.0000.01613.79
5.6.340.0070.00714.10
5.6.330.0110.00414.00
5.6.320.0030.00914.44
5.6.310.0000.01414.07
5.6.300.0030.00614.52
5.6.290.0090.00314.30
5.6.280.0070.03717.83
5.6.270.0000.01413.97
5.6.260.0000.01113.94
5.6.250.0060.00614.21
5.6.240.0030.00613.93
5.6.230.0070.00714.55
5.6.220.0030.01014.08
5.6.210.0080.04317.45
5.6.200.0050.04616.23
5.6.190.0130.04217.52
5.6.180.0220.03317.22
5.6.170.0220.04017.12
5.6.160.0150.04517.38
5.6.150.0210.04017.25
5.6.140.0160.02617.28
5.6.130.0120.02817.27
5.6.120.0190.02717.31
5.6.110.0160.04117.30
5.6.100.0250.03517.38
5.6.90.0180.02517.39
5.6.80.0150.02616.96
5.6.70.0120.03416.70
5.6.60.0180.03517.02
5.6.50.0160.02516.93
5.6.40.0220.03516.75
5.6.30.0180.02316.74
5.6.20.0200.03316.69
5.6.10.0180.03516.95
5.6.00.0150.02516.90
5.5.380.0030.00711.18
5.5.370.0060.00011.18
5.5.360.0000.00811.18
5.5.350.0070.04315.81
5.5.340.0020.02214.53
5.5.330.0150.04115.69
5.5.320.0180.04315.78
5.5.310.0170.02415.71
5.5.300.0160.02815.69
5.5.290.0170.03615.71
5.5.280.0120.03615.72
5.5.270.0200.02215.62
5.5.260.0150.03815.71
5.5.250.0180.03615.61
5.5.240.0180.02415.23
5.5.230.0200.03715.36
5.5.220.0170.03715.38
5.5.210.0160.02115.41
5.5.200.0170.03615.35
5.5.190.0150.03115.22
5.5.180.0140.02615.23
5.5.170.0030.00611.18
5.5.160.0180.02315.38
5.5.150.0130.02515.37
5.5.140.0180.04015.26
5.5.130.0150.04515.35
5.5.120.0180.03715.30
5.5.110.0150.03215.33
5.5.100.0100.02615.25
5.5.90.0120.02515.31
5.5.80.0130.02215.31
5.5.70.0140.02315.27
5.5.60.0080.02515.28
5.5.50.0150.02115.17
5.5.40.0090.02515.22
5.5.30.0120.02615.24
5.5.20.0080.02515.32
5.5.10.0120.02215.29
5.5.00.0120.02015.19
5.4.450.0140.02215.21
5.4.440.0170.04215.15
5.4.430.0160.03315.34
5.4.420.0150.04315.34
5.4.410.0200.03715.08
5.4.400.0200.02815.03
5.4.390.0170.03514.99
5.4.380.0170.03015.15
5.4.370.0100.03414.99
5.4.360.0180.02015.17
5.4.350.0180.02714.98
5.4.340.0130.02514.98
5.4.330.0000.00711.18
5.4.320.0210.03715.14
5.4.310.0170.02015.17
5.4.300.0190.03515.13
5.4.290.0150.03815.18
5.4.280.0190.02415.11
5.4.270.0210.03115.13
5.4.260.0220.03415.14
5.4.250.0180.01815.13
5.4.240.0180.01515.16
5.4.230.0170.01715.13
5.4.220.0100.02315.12
5.4.210.0140.01915.18
5.4.200.0120.02315.12
5.4.190.0150.02315.18
5.4.180.0080.02415.04
5.4.170.0170.03815.16
5.4.160.0100.02815.15
5.4.150.0130.02515.16
5.4.140.0100.02213.77
5.4.130.0150.02213.82
5.4.120.0080.02413.71
5.4.110.0070.02613.79
5.4.100.0130.02013.73
5.4.90.0140.01813.77
5.4.80.0170.01513.78
5.4.70.0080.02313.71
5.4.60.0080.02313.78
5.4.50.0130.02013.70
5.4.40.0080.02313.74
5.4.30.0120.02513.74
5.4.20.0120.02013.65
5.4.10.0140.01813.71
5.4.00.0150.02013.45
5.3.290.0140.02912.96
5.3.280.0080.02512.89
5.3.270.0120.02112.93
5.3.260.0130.02112.80
5.3.250.0120.01812.86
5.3.240.0060.02612.83
5.3.230.0170.02912.94
5.3.220.0100.02012.86
5.3.210.0130.02012.85
5.3.200.0080.02512.84
5.3.190.0100.02612.86
5.3.180.0100.02512.77
5.3.170.0150.01812.84
5.3.160.0090.02212.82
5.3.150.0100.02212.83
5.3.140.0110.02012.83
5.3.130.0130.02012.82
5.3.120.0110.02112.82
5.3.110.0120.02012.80
5.3.100.0120.02012.60
5.3.90.0110.02112.57
5.3.80.0100.02212.52
5.3.70.0130.02112.57
5.3.60.0100.02212.51
5.3.50.0150.01812.53
5.3.40.0140.03912.53
5.3.30.0120.02212.51
5.3.20.0120.02712.42
5.3.10.0120.02212.38
5.3.00.0250.03012.30
5.2.170.0100.01911.82
5.2.160.0100.01611.82
5.2.150.0140.02511.82
5.2.140.0140.02411.82
5.2.130.0130.03011.82
5.2.120.0130.02211.82
5.2.110.0100.02411.82
5.2.100.0150.02011.82
5.2.90.0170.02811.82
5.2.80.0120.03411.82
5.2.70.0210.02611.82
5.2.60.0130.03211.82
5.2.50.0180.02811.82
5.2.40.0120.03011.82
5.2.30.0120.02311.82
5.2.20.0160.02811.82
5.2.10.0130.02811.82
5.2.00.0080.01811.82
5.1.60.0150.02211.82
5.1.50.0100.02111.82
5.1.40.0100.02411.82
5.1.30.0140.02611.82
5.1.20.0110.01611.82
5.1.10.0140.02511.82
5.1.00.0130.02811.82
5.0.50.0070.01811.82
5.0.40.0060.01911.82
5.0.30.0120.02811.82
5.0.20.0070.01911.82
5.0.10.0090.02011.82
5.0.00.0050.03711.82
4.4.90.0070.01511.82
4.4.80.0090.01511.82
4.4.70.0050.01311.82
4.4.60.0070.01211.82
4.4.50.0090.00811.82
4.4.40.0100.01911.82
4.4.30.0050.01711.82
4.4.20.0070.01411.82
4.4.10.0070.01211.82
4.4.00.0080.02311.82
4.3.110.0050.02011.82
4.3.100.0100.01511.82
4.3.90.0080.01411.82
4.3.80.0130.02211.82
4.3.70.0060.01811.82
4.3.60.0080.01311.82
4.3.50.0080.01511.82
4.3.40.0070.02011.82
4.3.30.0020.01511.82
4.3.20.0050.02011.82
4.3.10.0030.01411.82
4.3.00.0020.02011.82

preferences:
52.86 ms | 400 KiB | 5 Q