3v4l.org

run code in 300+ PHP versions simultaneously
<?php function serializeContext($default, $optional) { return "'" . implode("', '", array_merge( $default, $optional )) . "'" ; } $a = array('test1', 'test2', 'test4'); $b = array('test3'); //var_dump(serializeContext($a, $b)); echo array_reduce($a, function($carry, $next){ return array($carry . $next); }, '');

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)
8.3.60.0150.00318.43
8.3.50.0160.00316.63
8.3.40.0120.00318.83
8.3.30.0070.00719.12
8.3.20.0000.00720.34
8.3.10.0140.00021.91
8.3.00.0090.00018.95
8.2.180.0160.00716.50
8.2.170.0100.01022.96
8.2.160.0150.00320.45
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0030.00620.92
8.2.110.0030.00622.06
8.2.100.0070.00317.63
8.2.90.0070.00019.34
8.2.80.0060.00317.97
8.2.70.0000.00817.38
8.2.60.0050.00317.80
8.2.50.0000.00818.07
8.2.40.0030.00618.16
8.2.30.0070.00017.94
8.2.20.0050.00217.69
8.2.10.0080.00018.20
8.2.00.0040.00418.16
8.1.280.0100.01025.92
8.1.270.0040.01220.38
8.1.260.0000.00826.35
8.1.250.0000.00828.09
8.1.240.0040.00422.14
8.1.230.0110.00017.65
8.1.220.0060.00317.79
8.1.210.0050.00318.77
8.1.200.0100.00017.35
8.1.190.0080.00017.35
8.1.180.0000.00818.10
8.1.170.0000.00920.39
8.1.160.0040.00422.02
8.1.150.0070.00018.89
8.1.140.0050.00217.37
8.1.130.0030.00317.88
8.1.120.0000.00717.42
8.1.110.0000.00717.47
8.1.100.0070.00017.48
8.1.90.0030.00317.48
8.1.80.0020.00517.29
8.1.70.0070.00017.44
8.1.60.0030.00517.47
8.1.50.0000.00917.57
8.1.40.0040.00417.52
8.1.30.0080.00017.70
8.1.20.0040.00417.57
8.1.10.0030.00517.51
8.1.00.0000.00817.38
8.0.300.0050.00318.77
8.0.290.0050.00316.72
8.0.280.0000.00718.43
8.0.270.0030.00317.12
8.0.260.0030.00317.29
8.0.250.0000.00716.94
8.0.240.0040.00417.05
8.0.230.0000.00716.94
8.0.220.0030.00316.82
8.0.210.0000.00716.97
8.0.200.0070.00016.91
8.0.190.0040.00417.00
8.0.180.0000.00816.98
8.0.170.0000.00817.02
8.0.160.0060.00316.99
8.0.150.0070.00016.87
8.0.140.0030.00416.82
8.0.130.0030.00313.38
8.0.120.0000.00816.80
8.0.110.0050.00516.89
8.0.100.0030.00616.81
8.0.90.0020.00517.02
8.0.80.0080.00816.99
8.0.70.0000.00816.76
8.0.60.0040.00416.80
8.0.50.0000.00716.81
8.0.30.0100.01017.16
8.0.20.0100.00817.40
8.0.10.0040.00416.94
8.0.00.0070.01016.88
7.4.330.0000.00515.05
7.4.320.0000.00616.63
7.4.300.0000.00616.50
7.4.290.0030.00616.62
7.4.280.0030.00316.49
7.4.270.0070.00016.59
7.4.260.0000.00716.48
7.4.250.0000.00716.41
7.4.240.0040.00416.56
7.4.230.0000.00716.49
7.4.220.0070.01116.68
7.4.210.0100.00516.60
7.4.200.0000.00716.54
7.4.160.0140.00716.62
7.4.150.0130.00617.40
7.4.140.0110.00617.86
7.4.130.0090.01116.51
7.4.120.0090.00816.57
7.4.110.0090.00916.58
7.4.100.0090.01616.77
7.4.90.0070.01516.46
7.4.80.0090.01219.39
7.4.70.0100.00716.43
7.4.60.0170.00016.50
7.4.50.0000.00816.37
7.4.40.0030.01316.53
7.4.30.0060.01016.61
7.4.00.0130.00314.95
7.3.330.0000.00613.29
7.3.320.0020.00213.15
7.3.310.0000.00616.45
7.3.300.0000.00716.31
7.3.290.0040.00416.23
7.3.280.0080.00916.39
7.3.270.0040.01317.40
7.3.260.0150.00316.70
7.3.250.0030.01516.40
7.3.240.0100.00916.30
7.3.230.0090.01416.39
7.3.210.0130.00316.47
7.3.200.0120.00919.39
7.3.190.0030.01316.31
7.3.180.0090.00616.59
7.3.170.0160.00316.37
7.3.160.0080.01216.42
7.3.120.0070.01014.97
7.3.110.0030.01314.79
7.3.100.0090.00614.79
7.3.90.0040.01415.09
7.3.80.0030.01015.06
7.3.70.0070.00714.83
7.3.60.0130.00314.53
7.3.50.0110.00714.78
7.3.40.0080.00014.85
7.3.30.0060.00614.84
7.3.20.0070.00716.46
7.3.10.0060.01016.59
7.3.00.0050.00616.53
7.2.330.0120.00616.70
7.2.320.0200.00316.68
7.2.310.0060.01016.72
7.2.300.0090.01216.66
7.2.290.0060.01216.55
7.2.250.0060.01314.71
7.2.240.0120.00915.05
7.2.230.0070.00715.07
7.2.220.0080.00814.74
7.2.210.0060.00615.01
7.2.200.0040.01115.13
7.2.190.0070.01014.95
7.2.180.0160.00314.67
7.2.170.0050.00514.98
7.2.130.0040.01116.79
7.2.120.0060.00916.97
7.2.110.0060.00616.84
7.2.100.0000.00916.88
7.2.90.0090.00617.03
7.2.80.0060.00616.93
7.2.70.0000.01216.96
7.2.60.0080.00616.86
7.2.50.0040.00716.80
7.2.40.0030.01016.85
7.2.30.0030.00916.86
7.2.20.0080.00416.85
7.2.10.0040.00717.01
7.2.00.0050.00918.13
7.1.330.0000.01415.63
7.1.320.0030.01015.73
7.1.310.0030.01015.61
7.1.300.0040.00815.42
7.1.290.0080.00015.71
7.1.280.0090.00315.61
7.1.270.0030.00715.57
7.1.260.0040.00715.68
7.1.250.0060.00615.78
7.1.200.0040.00715.80
7.1.100.0000.01218.15
7.1.70.0100.00617.23
7.1.60.0140.01019.48
7.1.50.0100.01316.92
7.1.00.0030.07722.32
7.0.200.0040.00416.69
7.0.60.0070.08320.04
7.0.50.0070.06017.89
7.0.40.0070.04320.23
7.0.30.0530.07320.23
7.0.20.0200.04320.10
7.0.10.0030.09020.24
7.0.00.0030.04320.18
5.6.280.0070.07020.90
5.6.210.0070.06320.73
5.6.200.0030.06718.21
5.6.190.0000.08720.55
5.6.180.0270.04320.43
5.6.170.0270.06320.54
5.6.160.0100.04720.55
5.6.150.0130.07718.19
5.6.140.0070.07318.15
5.6.130.0070.07718.28
5.6.120.0100.08321.05
5.6.110.0170.07321.10
5.6.100.0100.06720.99
5.6.90.0100.08320.96
5.6.80.0130.07320.45
5.5.350.0230.08020.31
5.5.340.0230.05718.02
5.5.330.0030.04320.21
5.5.320.0430.05720.28
5.5.310.0270.08720.24
5.5.300.0100.04718.09
5.5.290.0070.08018.05
5.5.280.0100.05720.88
5.5.270.0130.06320.97
5.5.260.0000.04320.98
5.5.250.0130.03720.66
5.5.240.0030.08020.16
5.4.450.0800.05319.48
5.4.440.0600.04719.35
5.4.430.0100.05319.50
5.4.420.0130.05319.55
5.4.410.0130.05019.31
5.4.400.0170.04719.02
5.4.390.0200.04319.02
5.4.380.0100.05319.12
5.4.370.0130.05019.09
5.4.360.0130.05319.24
5.4.350.0170.04719.02
5.4.340.0170.04718.98
5.4.320.0030.06019.18
5.4.310.0200.04019.24
5.4.300.0170.05719.24
5.4.290.0170.04719.11
5.4.280.0100.06319.02
5.4.270.0170.04719.26
5.4.260.0200.04719.02
5.4.250.0200.04319.12
5.4.240.0170.04719.13
5.4.230.0130.05319.10
5.4.220.0030.06319.11
5.4.210.0130.05019.14
5.4.200.0100.05016.80
5.4.190.0100.05019.07
5.4.180.0100.05319.09
5.4.170.0100.05319.14
5.4.160.0170.04319.09
5.4.150.0100.05019.05
5.4.140.0170.04316.29
5.4.130.0070.05316.41
5.4.120.0070.05316.60
5.4.110.0130.04316.25
5.4.100.0170.04316.35
5.4.90.0170.04316.25
5.4.80.0100.04716.23
5.4.70.0100.05016.60
5.4.60.0130.04716.55
5.4.50.0070.05316.68
5.4.40.0270.05316.45
5.4.30.0070.05016.31
5.4.20.0130.05016.55
5.4.10.0070.05016.43
5.4.00.0170.04016.11
5.3.290.0070.05714.68
5.3.280.0270.05314.63
5.3.270.0070.06314.53
5.3.260.0070.05314.63
5.3.250.0070.05714.56
5.3.240.0130.04714.77
5.3.230.0100.05014.50
5.3.220.0030.05714.66
5.3.210.0130.05014.62
5.3.200.0100.05014.58
5.3.190.0100.05314.58
5.3.180.0100.05314.59
5.3.170.0070.05714.72
5.3.160.0170.04014.50
5.3.150.0130.05314.71
5.3.140.0030.05714.56
5.3.130.0100.05714.58
5.3.120.0130.05014.51
5.3.110.0030.06014.47
5.3.100.0100.05013.96
5.3.90.0170.04313.94
5.3.80.0100.05313.93
5.3.70.0070.05314.08
5.3.60.0130.05713.91
5.3.50.0130.04714.11
5.3.40.0170.04313.96
5.3.30.0070.05313.82
5.3.20.0170.04013.69
5.3.10.0070.05013.62
5.3.00.0100.04713.65
5.2.170.0030.05011.09
5.2.160.0070.04011.00
5.2.150.0100.04011.05
5.2.140.0030.05011.00
5.2.130.0130.03311.01
5.2.120.0070.04011.09
5.2.110.0100.03711.15
5.2.100.0170.03011.10
5.2.90.0100.04311.17
5.2.80.0170.03311.07
5.2.70.0170.04711.02
5.2.60.0100.04010.95
5.2.50.0070.04011.00
5.2.40.0130.04310.98
5.2.30.0070.04310.92
5.2.20.0000.04710.91
5.2.10.0100.03311.03
5.2.00.0030.04310.66
5.1.60.0130.0279.99
5.1.50.0100.03310.13
5.1.40.0100.0409.90
5.1.30.0100.03010.41
5.1.20.0170.02710.50
5.1.10.0030.03710.12
5.1.00.0030.03710.15
5.0.50.0000.0338.54
5.0.40.0000.0308.30
5.0.30.0070.0438.14
5.0.20.0070.0278.20
5.0.10.0030.0278.11
5.0.00.0000.0538.07
4.4.90.0030.0205.92
4.4.80.0030.0205.90
4.4.70.0000.0275.75
4.4.60.0030.0205.75
4.4.50.0030.0205.78
4.4.40.0000.0375.77
4.4.30.0000.0235.90
4.4.20.0000.0275.80
4.4.10.0070.0205.96
4.4.00.0100.0305.93
4.3.110.0000.0275.69
4.3.100.0070.0175.78
4.3.90.0030.0205.77
4.3.80.0000.0375.78
4.3.70.0030.0205.82
4.3.60.0030.0205.80
4.3.50.0030.0205.68
4.3.40.0030.0375.61
4.3.30.0030.0204.42
4.3.20.0000.0274.42
4.3.10.0030.0204.36
4.3.00.0100.0236.81

preferences:
56.52 ms | 400 KiB | 5 Q