3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['first','second','third']; // touch refcount $b = &$a; foreach($a as $v) { echo 'Running ', $v, "\n\n"; unset($a[1]); var_dump($a); var_dump($b); } echo 'final:', "\n"; var_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)
8.3.40.0110.00718.71
8.3.30.0070.00718.67
8.3.20.0040.00420.29
8.3.10.0080.00021.84
8.3.00.0040.00423.40
8.2.170.0060.00922.96
8.2.160.0070.00720.35
8.2.150.0090.00024.18
8.2.140.0030.00524.66
8.2.130.0040.00419.77
8.2.120.0040.00426.35
8.2.110.0060.00321.00
8.2.100.0040.00717.93
8.2.90.0040.00419.41
8.2.80.0050.00317.97
8.2.70.0000.01017.59
8.2.60.0040.00418.04
8.2.50.0060.00318.07
8.2.40.0030.00622.19
8.2.30.0030.00319.42
8.2.20.0060.00317.68
8.2.10.0040.00418.06
8.2.00.0050.00218.11
8.1.270.0040.00423.92
8.1.260.0070.00028.09
8.1.250.0040.00428.09
8.1.240.0070.00322.59
8.1.230.0110.00019.08
8.1.220.0000.00817.76
8.1.210.0030.00518.77
8.1.200.0000.00817.35
8.1.190.0040.00417.35
8.1.180.0040.00418.10
8.1.170.0040.00418.54
8.1.160.0000.00820.64
8.1.150.0040.00418.84
8.1.140.0000.00819.61
8.1.130.0040.00417.66
8.1.120.0040.00417.36
8.1.110.0000.00717.45
8.1.100.0000.00817.52
8.1.90.0000.00717.51
8.1.80.0080.00017.35
8.1.70.0030.00317.43
8.1.60.0000.00917.43
8.1.50.0030.00517.49
8.1.40.0030.00517.56
8.1.30.0000.00917.63
8.1.20.0040.00417.61
8.1.10.0000.00717.50
8.1.00.0040.00417.50
8.0.300.0080.00018.77
8.0.290.0000.00716.75
8.0.280.0000.00718.50
8.0.270.0000.00717.25
8.0.260.0000.00617.20
8.0.250.0000.00717.00
8.0.240.0040.00416.92
8.0.230.0030.00516.96
8.0.220.0040.00416.77
8.0.210.0000.00816.88
8.0.200.0030.00316.99
8.0.190.0060.00316.84
8.0.180.0030.00916.98
8.0.170.0080.00016.85
8.0.160.0080.00016.96
8.0.150.0070.00016.83
8.0.140.0040.00416.85
8.0.130.0030.00313.40
8.0.120.0040.00416.83
8.0.110.0000.00716.88
8.0.100.0080.00016.85
8.0.90.0000.00716.74
8.0.80.0120.00916.89
8.0.70.0080.00016.70
8.0.60.0000.00717.01
8.0.50.0030.00516.94
8.0.30.0090.01017.13
8.0.20.0110.01317.40
8.0.10.0070.00016.91
8.0.00.0070.01416.77
7.4.330.0020.00216.71
7.4.320.0030.00316.63
7.4.300.0040.00416.50
7.4.290.0000.00716.52
7.4.280.0030.00616.55
7.4.270.0030.00316.67
7.4.260.0070.00016.63
7.4.250.0000.00716.39
7.4.240.0020.00516.57
7.4.230.0080.00016.67
7.4.220.0130.01016.56
7.4.210.0070.00716.57
7.4.200.0030.00516.50
7.4.160.0040.01216.48
7.4.150.0140.00517.40
7.4.140.0150.00817.86
7.4.130.0100.01416.70
7.4.120.0150.00716.50
7.4.110.0040.01416.62
7.4.100.0090.00916.53
7.4.90.0140.00316.32
7.4.80.0100.01019.39
7.4.70.0110.00716.36
7.4.60.0130.00316.46
7.4.50.0070.01016.63
7.4.40.0120.00816.50
7.4.30.0090.00916.47
7.4.00.0020.01314.89
7.3.330.0000.00513.20
7.3.320.0000.00613.16
7.3.310.0000.00716.11
7.3.300.0000.00716.29
7.3.290.0000.00716.27
7.3.280.0110.00816.28
7.3.270.0100.01017.40
7.3.260.0070.01116.31
7.3.240.0060.01416.38
7.3.230.0160.00516.52
7.3.210.0140.00616.29
7.3.200.0150.00319.39
7.3.190.0100.00716.36
7.3.180.0110.00816.58
7.3.170.0000.01616.28
7.3.160.0130.00716.22
7.3.120.0080.00614.39
7.3.110.0090.00315.00
7.3.100.0030.01414.80
7.3.90.0040.00414.68
7.3.80.0110.00414.90
7.3.70.0060.00614.49
7.3.60.0030.00914.71
7.3.50.0030.01014.84
7.3.40.0040.01414.86
7.3.30.0060.00714.80
7.3.20.0070.00716.50
7.3.10.0100.00516.60
7.3.00.0070.00816.73
7.2.330.0180.00316.59
7.2.320.0090.00916.77
7.2.310.0150.00316.39
7.2.300.0090.01316.41
7.2.290.0060.01116.61
7.2.250.0030.01614.94
7.2.240.0030.01615.26
7.2.230.0090.00615.00
7.2.220.0050.00514.85
7.2.210.0080.00815.06
7.2.200.0000.00914.80
7.2.190.0190.00014.94
7.2.180.0030.01215.00
7.2.170.0130.00614.98
7.2.130.0120.00216.97
7.2.120.0100.00316.95
7.2.110.0030.00916.81
7.2.100.0060.00916.86
7.2.90.0060.00616.64
7.2.80.0060.00616.95
7.2.70.0030.01017.03
7.2.60.0080.00516.79
7.2.50.0100.00316.46
7.2.40.0060.00317.03
7.2.30.0030.00617.09
7.2.20.0040.00816.99
7.2.10.0030.00716.86
7.2.00.0030.00918.00
7.1.330.0030.00915.37
7.1.320.0060.00915.79
7.1.310.0110.00415.70
7.1.300.0070.01015.97
7.1.290.0150.00415.67
7.1.280.0070.00715.46
7.1.270.0080.00615.57
7.1.260.0070.00715.82
7.1.250.0000.01115.97
7.1.200.0000.01415.89
7.1.100.0100.01018.09
7.1.70.0000.00917.35
7.1.60.0140.01019.12
7.1.50.0000.01016.86
7.1.00.0070.07322.47
7.0.200.0340.01314.94
7.0.60.0200.07721.80
7.0.50.0030.08317.82
7.0.40.0000.06319.96
7.0.30.0330.07720.30
7.0.20.0230.08320.24
7.0.10.0070.07020.21
7.0.00.0100.08020.20
5.6.280.0000.04021.10
5.6.210.0030.06020.46
5.6.200.0070.08018.19
5.6.190.0200.04320.61
5.6.180.0470.07320.67
5.6.170.0270.07720.43
5.6.160.0130.07020.46
5.6.150.0070.04318.13
5.6.140.0030.07318.21
5.6.130.0070.04718.11
5.6.120.0030.08020.99
5.6.110.0030.06321.01
5.6.100.0130.08020.98
5.6.90.0070.06021.02
5.6.80.0030.09020.36
5.5.350.0200.02720.50
5.5.340.0100.04317.98
5.5.330.0100.04720.25
5.5.320.0270.07720.42
5.5.310.0200.04020.50
5.5.300.0000.04017.88
5.5.290.0130.07717.91
5.5.280.0100.07720.65
5.5.270.0070.05020.86
5.5.260.0100.04320.86
5.5.250.0070.08720.79
5.5.240.0170.07020.15

preferences:
37.79 ms | 400 KiB | 5 Q