3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = [ 'c' => [ [ 'q' => 1, ], [ 'q' => 2, ], [ 'q' => 3, ], ] ]; $before = $data; foreach ($data['c'] as &$c) { } $after = $data; var_dump($before === $after); foreach ($data['c'] as $c) { } $after = $data; var_dump($before === $after);

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)
8.3.40.0090.00918.79
8.3.30.0070.00718.83
8.3.20.0000.00918.91
8.3.10.0000.00821.60
8.3.00.0040.00423.66
8.2.170.0120.00918.95
8.2.160.0100.00322.96
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00226.16
8.2.120.0040.00419.83
8.2.110.0000.01122.25
8.2.100.0070.00419.32
8.2.90.0090.00017.91
8.2.80.0000.00720.50
8.2.70.0040.00418.05
8.2.60.0040.00418.22
8.2.50.0040.00417.55
8.2.40.0000.00819.52
8.2.30.0070.00018.13
8.2.20.0040.00418.06
8.2.10.0040.00419.43
8.2.00.0050.00319.55
8.1.270.0140.00322.16
8.1.260.0040.00426.35
8.1.250.0050.00228.09
8.1.240.0060.00320.78
8.1.230.0050.01020.72
8.1.220.0030.00517.77
8.1.210.0050.00318.88
8.1.200.0060.00317.47
8.1.190.0050.00317.48
8.1.180.0030.00518.10
8.1.170.0030.00518.68
8.1.160.0000.01018.80
8.1.150.0000.00718.95
8.1.140.0040.00417.73
8.1.130.0000.00717.44
8.1.120.0040.00417.44
8.1.110.0070.00017.45
8.1.100.0040.00417.47
8.1.90.0000.00717.46
8.1.80.0050.00317.35
8.1.70.0030.00317.51
8.1.60.0100.00017.60
8.1.50.0000.00717.40
8.1.40.0000.00717.56
8.1.30.0040.00417.66
8.1.20.0050.00317.61
8.1.10.0040.00417.55
8.1.00.0000.00817.48
8.0.300.0070.00420.09
8.0.290.0050.00516.75
8.0.280.0030.00518.38
8.0.270.0070.00016.81
8.0.260.0070.00016.88
8.0.250.0000.00716.98
8.0.240.0070.00016.84
8.0.230.0030.00316.93
8.0.220.0040.00416.91
8.0.210.0000.00716.88
8.0.200.0030.00316.95
8.0.190.0040.00416.88
8.0.180.0040.00416.86
8.0.170.0030.00516.91
8.0.160.0070.00016.93
8.0.150.0040.00416.86
8.0.140.0000.00716.75
8.0.130.0030.00313.28
8.0.120.0040.00416.76
8.0.110.0030.00516.75
8.0.100.0020.00516.85
8.0.90.0040.00416.77
8.0.80.0070.01216.84
8.0.70.0040.00416.92
8.0.60.0000.00716.74
8.0.50.0050.00216.92
8.0.30.0150.00717.22
8.0.20.0090.01317.40
8.0.10.0110.00717.05
8.0.00.0110.00816.85
7.4.330.0050.00015.55
7.4.320.0030.00316.60
7.4.300.0030.00316.54
7.4.290.0000.00716.40
7.4.280.0040.00416.39
7.4.270.0000.00816.50
7.4.260.0030.00316.43
7.4.250.0030.00316.53
7.4.240.0070.00016.51
7.4.230.0000.00716.30
7.4.220.0000.00716.51
7.4.210.0030.01316.54
7.4.200.0000.00716.34
7.4.160.0080.01016.51
7.4.140.0100.00917.61
7.4.130.0050.01216.45
7.4.120.0110.00916.50
7.4.110.0130.00716.51
7.4.100.0130.00616.52
7.4.90.0130.00916.42
7.4.80.0130.00817.02
7.4.70.0140.00816.46
7.4.60.0120.00716.50
7.4.50.0110.00916.44
7.4.40.0150.00716.55
7.4.30.0120.01116.55
7.4.20.0120.01016.47
7.4.10.0170.00616.49
7.4.00.0080.01115.88
7.3.330.0000.00513.02
7.3.320.0060.00013.00
7.3.310.0030.00316.19
7.3.300.0000.00716.31
7.3.290.0040.00416.26
7.3.280.0030.01716.30
7.3.260.0090.00816.42
7.3.250.0170.00016.48
7.3.240.0130.00816.29
7.3.230.0140.00716.41
7.3.220.0130.00816.33
7.3.210.0130.01016.37
7.3.200.0140.00616.43
7.3.190.0150.00616.40
7.3.180.0120.00816.45
7.3.170.0120.01016.46
7.3.160.0130.00916.36
7.3.150.0130.00816.41
7.3.140.0110.01016.41
7.3.130.0130.00916.36
7.3.120.0110.00916.20
7.3.110.0080.01015.88
7.3.100.0110.00715.85
7.3.90.0110.00715.82
7.3.80.0080.00915.86
7.3.70.0100.00815.77
7.3.60.0120.00715.81
7.3.50.0120.00615.88
7.3.40.0080.01115.76
7.3.30.0050.01115.65
7.3.20.0080.01116.17
7.3.10.0080.01016.19
7.3.00.0140.00816.19
7.2.340.0130.00916.57
7.2.330.0110.01116.74
7.2.320.0110.00816.63
7.2.310.0090.01116.63
7.2.300.0150.00916.59
7.2.290.0140.00616.63
7.2.280.0130.00916.61
7.2.270.0150.00916.65
7.2.260.0140.00816.64
7.2.250.0070.01416.42
7.2.240.0100.00815.98
7.2.230.0080.01116.03
7.2.220.0130.00516.12
7.2.210.0100.00815.88
7.2.200.0090.00915.97
7.2.190.0110.00816.03
7.2.180.0090.00916.01
7.2.170.0090.01016.05
7.2.160.0080.01016.09
7.2.150.0130.00516.43
7.2.140.0120.00716.38
7.2.130.0230.00716.47
7.2.120.0130.00916.51
7.2.110.0140.00816.50
7.2.100.0160.00616.45
7.2.90.0140.00816.44
7.2.80.0200.00815.99
7.2.70.0200.00816.09
7.2.60.0210.00916.21
7.2.50.0180.00916.15
7.2.40.0240.01116.06
7.2.30.0180.01016.18
7.2.20.0160.00916.20
7.2.10.0190.00716.12
7.2.00.0150.00916.14
7.1.330.0170.00515.34
7.1.320.0190.00815.35
7.1.310.0130.01015.31
7.1.300.0140.00915.27
7.1.290.0130.00915.23
7.1.280.0140.00815.29
7.1.270.0150.00815.27
7.1.260.0150.00815.23
7.1.250.0160.00615.30
7.1.240.0180.00715.33
7.1.230.0170.00915.22
7.1.220.0130.01115.30
7.1.210.0190.00515.23
7.1.200.0140.00815.30
7.1.190.0230.00614.95
7.1.180.0200.00814.98
7.1.170.0170.01114.94
7.1.160.0220.00714.92
7.1.150.0160.01114.98
7.1.140.0240.00814.95
7.1.130.0200.00814.96
7.1.120.0170.00815.00
7.1.110.0220.00715.01
7.1.100.0190.00915.01
7.1.90.0190.00815.07
7.1.80.0190.00715.01
7.1.70.0220.00815.04
7.1.60.0200.01120.98
7.1.50.0290.00821.04
7.1.40.0260.00921.02
7.1.30.0220.01321.00
7.1.20.0210.01121.09
7.1.10.0200.00714.98
7.1.00.0170.00815.14
7.0.330.0320.00614.80
7.0.320.0140.01114.78
7.0.310.0260.00714.46
7.0.300.0210.01114.47
7.0.290.0240.01014.58
7.0.280.0170.00914.83
7.0.270.0220.00914.50
7.0.260.0440.01014.57
7.0.250.0300.00914.52
7.0.240.0220.00914.60
7.0.230.0260.00614.53
7.0.220.0220.00814.50
7.0.210.0220.00714.52
7.0.200.0180.01014.55
7.0.190.0230.00814.60
7.0.180.0330.00814.58
7.0.170.0220.00814.63
7.0.160.0240.00714.58
7.0.150.0220.00914.61
7.0.140.0210.00914.80
7.0.130.0170.00814.83
7.0.120.0210.00814.89
7.0.110.0210.00914.82
7.0.100.0240.00614.77
7.0.90.0230.00914.83
7.0.80.0200.00814.61
7.0.70.0320.00614.61
7.0.60.0180.01014.49
7.0.50.0200.00714.50
7.0.40.0190.00914.50
7.0.30.0210.00514.55
7.0.20.0190.00614.54
7.0.10.0170.00814.55
7.0.00.0220.00714.54
5.6.400.0140.01215.54
5.6.390.0140.01215.72
5.6.380.0170.01015.60
5.6.370.0210.00615.70
5.6.360.0130.01415.49
5.6.350.0210.00915.46
5.6.340.0170.01115.78
5.6.330.0170.01015.78
5.6.320.0160.01215.69
5.6.310.0180.00915.80
5.6.300.0150.01015.21
5.6.290.0150.00915.14
5.6.280.0150.01015.19
5.6.270.0170.00815.25
5.6.260.0170.00815.24
5.6.250.0160.00915.16
5.6.240.0150.00915.26
5.6.230.0130.01115.18
5.6.220.0140.01115.07
5.6.210.0130.01015.19
5.6.200.0130.01015.16
5.6.190.0150.01015.18
5.6.180.0150.00715.18
5.6.170.0150.00815.14
5.6.160.0130.01115.16
5.6.150.0150.01115.10
5.6.140.0130.01115.20
5.6.130.0150.00915.23
5.6.120.0160.00815.18
5.6.110.0120.01115.14
5.6.100.0130.01015.10
5.6.90.0160.00915.10
5.6.80.0120.01115.07
5.6.70.0160.00615.08
5.6.60.0130.00915.15
5.6.50.0130.00915.05
5.6.40.0140.00914.98
5.6.30.0130.01215.04
5.6.20.0180.00915.17
5.6.10.0160.00915.13
5.6.00.0130.00915.10

preferences:
58.55 ms | 400 KiB | 5 Q