3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('x' => 'X'); foreach ($a as $k => &$v) { $a['X'] = $v; unset($a['x']); } echo $a['X'];

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)
8.3.60.0100.01018.43
8.3.50.0140.00321.99
8.3.40.0140.00018.97
8.3.30.0070.00719.17
8.3.20.0040.00420.21
8.3.10.0040.00421.97
8.3.00.0050.00322.46
8.2.180.0150.00616.32
8.2.170.0070.00722.96
8.2.160.0070.00719.21
8.2.150.0140.00324.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0080.00017.63
8.2.110.0090.00020.34
8.2.100.0030.00717.91
8.2.90.0040.00419.21
8.2.80.0090.00017.97
8.2.70.0000.00817.63
8.2.60.0050.00317.93
8.2.50.0030.00718.07
8.2.40.0080.00018.34
8.2.30.0070.00318.02
8.2.20.0000.00817.69
8.2.10.0000.00719.60
8.2.00.0000.00717.80
8.1.280.0100.01025.92
8.1.270.0080.00021.93
8.1.260.0000.00826.35
8.1.250.0090.00328.09
8.1.240.0030.00623.68
8.1.230.0030.00719.11
8.1.220.0040.00417.79
8.1.210.0000.00818.77
8.1.200.0050.00517.48
8.1.190.0080.00017.40
8.1.180.0090.00018.10
8.1.170.0000.00818.59
8.1.160.0040.00421.99
8.1.150.0070.00018.63
8.1.140.0040.00417.51
8.1.130.0030.00617.83
8.1.120.0000.00717.49
8.1.110.0030.00617.34
8.1.100.0020.00517.49
8.1.90.0030.00617.31
8.1.80.0050.00317.50
8.1.70.0030.00317.38
8.1.60.0030.00617.61
8.1.50.0040.00417.43
8.1.40.0050.00217.41
8.1.30.0040.00417.60
8.1.20.0080.00017.65
8.1.10.0050.00217.58
8.1.00.0060.00317.49
8.0.300.0000.00718.77
8.0.290.0070.00017.05
8.0.280.0030.00318.42
8.0.270.0040.00417.13
8.0.260.0030.00316.88
8.0.250.0050.00216.89
8.0.240.0030.00316.93
8.0.230.0040.00416.93
8.0.220.0030.00516.95
8.0.210.0070.00016.77
8.0.200.0030.00316.80
8.0.190.0070.00016.85
8.0.180.0040.00416.91
8.0.170.0060.00316.93
8.0.160.0050.00216.88
8.0.150.0040.00416.84
8.0.140.0040.00316.88
8.0.130.0000.00513.32
8.0.120.0040.00416.82
8.0.110.0000.00716.84
8.0.100.0000.00816.78
8.0.90.0040.00416.81
8.0.80.0110.01116.87
8.0.70.0040.00416.93
8.0.60.0060.00316.76
8.0.50.0070.00016.94
8.0.30.0150.01017.12
8.0.20.0110.00717.40
8.0.10.0070.00017.12
8.0.00.0130.00916.74
7.4.330.0030.00315.15
7.4.320.0030.00316.57
7.4.300.0000.00616.48
7.4.290.0000.00716.59
7.4.280.0030.00316.48
7.4.270.0030.00316.61
7.4.260.0040.00416.57
7.4.250.0030.00616.38
7.4.240.0030.00416.60
7.4.230.0030.00316.39
7.4.220.0140.01016.62
7.4.210.0050.00916.46
7.4.200.0070.00016.43
7.4.190.0000.00716.40
7.4.160.0060.00916.35
7.4.150.0140.00317.40
7.4.140.0120.00817.86
7.4.130.0120.00416.61
7.4.120.0120.00516.41
7.4.110.0170.00016.47
7.4.100.0080.00816.56
7.4.90.0130.01016.52
7.4.80.0130.00719.39
7.4.70.0130.00716.52
7.4.60.0030.01316.45
7.4.50.0000.00516.40
7.4.40.0070.00722.77
7.4.30.0120.00416.63
7.4.00.0080.00514.92
7.3.330.0060.00013.21
7.3.320.0020.00313.30
7.3.310.0000.00716.19
7.3.300.0070.00016.27
7.3.290.0060.01316.37
7.3.280.0100.00916.29
7.3.270.0110.00617.40
7.3.260.0100.00716.32
7.3.250.0040.01216.56
7.3.240.0140.00316.54
7.3.230.0120.00916.39
7.3.210.0100.00516.23
7.3.200.0100.00719.39
7.3.190.0030.01416.52
7.3.180.0150.00016.62
7.3.170.0070.01416.39
7.3.160.0110.00816.45
7.3.120.0090.00614.92
7.3.10.0030.00916.70
7.3.00.0000.01016.62
7.2.330.0180.00016.64
7.2.320.0060.01316.52
7.2.310.0080.00916.71
7.2.300.0120.00916.44
7.2.290.0220.00316.65
7.2.130.0100.00016.98
7.2.120.0060.00817.07
7.2.110.0000.01416.94
7.2.100.0000.01216.78
7.2.90.0030.01417.06
7.2.80.0030.01017.03
7.2.70.0040.01217.05
7.2.60.0040.00717.00
7.2.50.0040.00416.99
7.2.40.0100.00716.92
7.2.30.0090.00017.08
7.2.20.0060.00317.16
7.2.10.0030.01016.72
7.2.00.0050.01118.04
7.1.250.0040.00415.76
7.1.240.0050.00515.69
7.1.230.0070.00715.76
7.1.220.0060.00315.64
7.1.210.0030.00615.75
7.1.200.0070.00515.94
7.1.190.0050.00515.59
7.1.180.0080.00415.53
7.1.170.0040.00715.85
7.1.160.0000.01215.84
7.1.150.0080.00415.55
7.1.140.0120.00315.58
7.1.130.0030.00615.76
7.1.120.0100.00315.83
7.1.110.0060.00615.68
7.1.100.0050.00816.71
7.1.90.0040.00415.76
7.1.80.0090.00615.78
7.1.70.0050.00416.30
7.1.60.0100.00717.80
7.1.50.0080.00516.29
7.1.40.0110.00015.23
7.1.30.0120.00015.30
7.1.20.0100.00015.72
7.1.10.0060.00615.52
7.1.00.0050.04319.02
7.0.330.0000.01615.39
7.0.320.0000.01115.25
7.0.310.0030.00915.33
7.0.300.0030.00715.59
7.0.290.0040.00415.52
7.0.280.0090.00315.26
7.0.270.0030.00915.52
7.0.260.0070.00015.43
7.0.250.0100.00015.45
7.0.240.0060.00615.29
7.0.230.0000.01115.33
7.0.220.0080.00415.34
7.0.210.0060.00615.38
7.0.200.0030.00915.93
7.0.190.0040.00715.55
7.0.180.0030.00915.39
7.0.170.0040.00215.58
7.0.160.0080.00815.11
7.0.150.0050.00315.28
7.0.140.0030.04018.81
7.0.130.0000.01415.37
7.0.120.0000.00815.46
7.0.110.0060.00915.37
7.0.100.0050.02917.62
7.0.90.0240.03217.75
7.0.80.0160.02217.68
7.0.70.0060.04117.72
7.0.60.0200.03517.75
7.0.50.0060.02517.92
7.0.40.0030.02816.81
7.0.30.0050.03016.68
7.0.20.0050.02516.86
7.0.10.0020.04516.87
7.0.00.0050.02816.83
5.6.380.0040.00414.59
5.6.370.0100.00314.29
5.6.360.0070.00314.44
5.6.350.0040.00814.24
5.6.340.0000.00914.12
5.6.330.0030.00314.13
5.6.320.0090.00614.62
5.6.310.0000.00714.34
5.6.300.0040.01114.63
5.6.290.0130.00014.69
5.6.280.0080.03317.66
5.6.270.0030.01014.49
5.6.260.0000.01414.14
5.6.250.0080.04117.63
5.6.240.0100.04017.48
5.6.230.0050.03217.52
5.6.220.0100.03717.48
5.6.210.0080.04517.36
5.6.200.0060.03017.67
5.6.190.0100.01817.80
5.6.180.0040.03217.75
5.6.170.0080.03917.69
5.6.160.0080.03217.67
5.6.150.0080.04017.67
5.6.140.0050.02317.66
5.6.130.0090.02417.76
5.6.120.0080.04317.79
5.6.110.0140.03717.59
5.6.100.0100.04517.65
5.6.90.0110.02517.74
5.6.80.0090.02217.15
5.6.70.0070.04217.28
5.6.60.0070.03417.46
5.6.50.0050.04317.49
5.6.40.0030.04317.33
5.6.30.0100.04317.31
5.6.20.0050.04517.31
5.6.10.0070.04217.33
5.6.00.0070.02517.28
5.5.380.0030.02615.75
5.5.370.0050.04315.59
5.5.360.0050.04015.72
5.5.350.0060.03515.75
5.5.340.0050.02415.70
5.5.330.0040.02215.97
5.5.320.0030.04615.96
5.5.310.0080.04116.06
5.5.300.0030.02815.86
5.5.290.0080.04115.86
5.5.280.0020.02716.05
5.5.270.0050.04315.97
5.5.260.0030.04515.98
5.5.250.0040.04015.94
5.5.240.0080.03815.54
5.5.230.0070.03815.66
5.5.220.0030.04515.70
5.5.210.0020.04315.54
5.5.200.0100.03615.65
5.5.190.0060.02315.47
5.5.180.0080.03815.54
5.5.170.0040.00811.04
5.5.160.0100.04315.44
5.5.150.0120.03315.66
5.5.140.0070.03515.67
5.5.130.0080.03515.57
5.5.120.0060.03115.58
5.5.110.0060.02415.48
5.5.100.0070.02015.54
5.5.90.0020.03815.57
5.5.80.0030.03015.48
5.5.70.0080.03515.48
5.5.60.0060.04215.61
5.5.50.0120.03715.52
5.5.40.0060.04115.59
5.5.30.0070.04315.43
5.5.20.0050.04215.50
5.5.10.0050.02715.62
5.5.00.0120.02715.60
5.4.450.0050.03415.21
5.4.440.0080.02815.36
5.4.430.0050.03815.20
5.4.420.0040.03615.13
5.4.410.0050.02715.08
5.4.400.0070.03515.09
5.4.390.0100.03314.95
5.4.380.0060.03914.98
5.4.370.0120.03214.79
5.4.360.0020.04514.90
5.4.350.0070.03814.97
5.4.340.0030.04514.98
5.4.330.0040.00811.10
5.4.320.0120.03714.84
5.4.310.0130.03614.99
5.4.300.0070.02514.90
5.4.290.0070.03514.84
5.4.280.0140.02214.92
5.4.270.0030.04614.82
5.4.260.0030.04015.08
5.4.250.0030.02314.95
5.4.240.0080.02815.02
5.4.230.0070.04215.15
5.4.220.0050.04515.06
5.4.210.0070.03515.13
5.4.200.0050.03615.04
5.4.190.0030.03314.99
5.4.180.0020.04014.88
5.4.170.0000.02414.88
5.4.160.0040.02614.93
5.4.150.0090.04114.71
5.4.140.0100.02813.71
5.4.130.0100.03313.47
5.4.120.0050.02613.45
5.4.110.0120.03213.65
5.4.100.0030.04013.64
5.4.90.0090.03713.71
5.4.80.0050.02413.53
5.4.70.0020.02913.51
5.4.60.0110.03313.48
5.4.50.0070.03913.58
5.4.40.0070.03913.60
5.4.30.0030.04313.65
5.4.20.0050.03713.69
5.4.10.0070.03813.70
5.4.00.0060.02313.33
5.3.290.0050.03212.59
5.3.280.0080.03812.50
5.3.270.0030.02512.51
5.3.260.0050.02112.53
5.3.250.0020.02212.51
5.3.240.0080.03812.53
5.3.230.0070.03612.35
5.3.220.0070.03312.35
5.3.210.0050.03812.36
5.3.200.0060.04112.48
5.3.190.0070.03112.38
5.3.180.0020.04512.46
5.3.170.0110.03712.58
5.3.160.0030.03512.44
5.3.150.0010.03612.51
5.3.140.0080.03812.52
5.3.130.0050.02812.54
5.3.120.0070.03812.52
5.3.110.0050.04012.53
5.3.100.0050.03912.24
5.3.90.0110.02412.31
5.3.80.0070.03712.21
5.3.70.0010.02612.21
5.3.60.0030.04112.11
5.3.50.0020.04312.10
5.3.40.0060.02612.15
5.3.30.0000.03612.03
5.3.20.0080.03611.95
5.3.10.0100.02811.82
5.3.00.0030.02711.86
5.2.170.0020.03610.32
5.2.160.0080.03210.26
5.2.150.0020.03410.21
5.2.140.0100.03710.27
5.2.130.0040.01910.20
5.2.120.0050.02210.15
5.2.110.0050.01810.27
5.2.100.0020.02510.28
5.2.90.0040.03410.16
5.2.80.0050.02810.27
5.2.70.0030.02510.19
5.2.60.0030.03510.15
5.2.50.0070.03310.14
5.2.40.0020.03410.25
5.2.30.0080.02310.17
5.2.20.0030.02510.01
5.2.10.0050.02510.04
5.2.00.0030.0199.81
5.1.60.0080.0259.72
5.1.50.0020.0279.72
5.1.40.0030.0159.72
5.1.30.0080.0199.72
5.1.20.0030.0309.72
5.1.10.0060.0159.72
5.1.00.0050.0259.72
5.0.50.0030.0239.72
5.0.40.0050.0159.72
5.0.30.0050.0209.72
5.0.20.0000.0259.72
5.0.10.0040.0159.72
5.0.00.0030.0359.72
4.4.90.0000.0189.72
4.4.80.0060.0159.72
4.4.70.0020.0209.72
4.4.60.0050.0179.72
4.4.50.0020.0109.72
4.4.40.0030.0259.72
4.4.30.0040.0199.72
4.4.20.0000.0129.72
4.4.10.0020.0219.72
4.4.00.0000.0209.72
4.3.110.0050.0159.72
4.3.100.0020.0189.72
4.3.90.0070.0139.72
4.3.80.0000.0209.72
4.3.70.0050.0159.72
4.3.60.0000.0209.72
4.3.50.0080.0139.72
4.3.40.0000.0199.72
4.3.30.0000.0159.72
4.3.20.0030.0179.72
4.3.10.0000.0189.72
4.3.00.0020.0119.72

preferences:
83.63 ms | 401 KiB | 5 Q