3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array_1 = array("1a" =>"dogs","2a" => "cats","3a" => "birds","4a" => "people"); $array_2 = array("4a" => "walking","2a" => "cats"); foreach ($array_1 as $key_1 => $value_1) { if (array_key_exists($key_1, $array_2)) { $array_1[$key_1] = $array_2[$key_1]; } } prit_r($array_1);

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)
8.3.60.0120.00316.63
8.3.50.0070.00822.00
8.3.40.0110.00718.75
8.3.30.0000.01419.04
8.3.20.0080.00020.31
8.3.10.0070.00023.53
8.3.00.0030.00617.38
8.2.180.0060.00918.43
8.2.170.0090.00622.96
8.2.160.0000.01320.17
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0050.00322.08
8.2.110.0100.00022.12
8.2.100.0050.00517.97
8.2.90.0000.00819.36
8.2.80.0030.00517.97
8.2.70.0040.00417.63
8.2.60.0040.00418.04
8.2.50.0030.00518.07
8.2.40.0050.00218.34
8.2.30.0000.00718.13
8.2.20.0080.00017.68
8.2.10.0000.00818.02
8.2.00.0100.00017.71
8.1.280.0070.00725.92
8.1.270.0040.00424.01
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0060.00322.66
8.1.230.0060.00617.42
8.1.220.0080.00017.76
8.1.210.0040.00418.77
8.1.200.0060.00317.47
8.1.190.0000.00917.43
8.1.180.0080.00018.10
8.1.170.0050.00318.64
8.1.160.0000.00822.05
8.1.150.0000.00718.63
8.1.140.0040.00417.45
8.1.130.0080.00017.82
8.1.120.0000.00717.37
8.1.110.0060.00317.55
8.1.100.0030.00717.43
8.1.90.0070.00017.45
8.1.80.0070.00317.48
8.1.70.0030.00317.39
8.1.60.0040.00417.63
8.1.50.0060.00317.41
8.1.40.0050.00317.57
8.1.30.0030.00617.55
8.1.20.0040.00417.62
8.1.10.0040.00417.50
8.1.00.0040.00417.56
8.0.300.0000.00818.77
8.0.290.0030.00517.00
8.0.280.0070.00018.36
8.0.270.0000.00717.29
8.0.260.0030.00317.21
8.0.250.0000.00717.04
8.0.240.0070.00016.88
8.0.230.0050.00317.02
8.0.220.0030.00316.83
8.0.210.0070.00016.95
8.0.200.0000.00716.91
8.0.190.0050.00216.88
8.0.180.0060.00316.98
8.0.170.0000.00816.96
8.0.160.0040.00417.01
8.0.150.0000.00816.81
8.0.140.0060.00316.93
8.0.130.0000.00713.45
8.0.120.0040.00416.91
8.0.110.0040.00416.91
8.0.100.0070.00017.02
8.0.90.0080.00016.84
8.0.80.0190.00316.94
8.0.70.0080.00016.89
8.0.60.0040.00416.84
8.0.50.0040.00416.91
8.0.30.0120.00917.34
8.0.20.0080.01317.40
8.0.10.0000.00716.91
8.0.00.0100.00816.72
7.4.330.0030.00315.04
7.4.320.0030.00316.58
7.4.300.0050.00216.50
7.4.290.0030.00316.58
7.4.280.0040.00416.51
7.4.270.0000.00816.38
7.4.260.0070.00016.56
7.4.250.0000.00716.37
7.4.240.0020.00516.56
7.4.230.0030.00316.44
7.4.220.0080.00716.54
7.4.210.0080.00716.56
7.4.200.0050.00216.69
7.4.190.0030.00316.47
7.4.160.0090.00616.59
7.4.150.0150.00417.40
7.4.140.0090.00917.86
7.4.130.0060.01016.61
7.4.120.0090.00816.54
7.4.110.0060.02016.73
7.4.100.0080.01616.59
7.4.90.0130.01016.63
7.4.80.0140.00319.39
7.4.70.0070.01416.57
7.4.60.0100.00716.50
7.4.50.0030.00616.63
7.4.40.0070.01022.77
7.4.30.0160.00016.48
7.4.00.0110.00315.06
7.3.330.0020.00313.13
7.3.320.0000.00513.23
7.3.310.0040.00416.48
7.3.300.0070.00016.30
7.3.290.0130.00616.38
7.3.280.0100.00716.39
7.3.270.0140.00817.40
7.3.260.0030.01616.74
7.3.250.0130.00916.49
7.3.240.0030.01316.39
7.3.230.0070.01016.51
7.3.210.0120.00616.39
7.3.200.0070.01419.39
7.3.190.0140.00916.47
7.3.180.0060.01116.62
7.3.170.0080.00816.50
7.3.160.0090.00616.41
7.3.120.0080.00815.00
7.2.330.0000.01816.77
7.2.320.0070.01016.48
7.2.310.0100.00716.49
7.2.300.0040.01216.52
7.2.290.0030.01316.51
7.2.60.0030.01016.83
7.2.00.0150.00419.21
7.1.200.0040.00715.86
7.1.100.0000.01418.12
7.1.70.0140.00317.23
7.1.60.0100.00719.46
7.1.50.0100.01417.05
7.1.00.0030.07722.30
7.0.200.0000.00716.61
7.0.140.0070.07021.98
7.0.60.0030.08719.91
7.0.50.0070.07317.85
7.0.40.0130.08320.09
7.0.30.0370.07320.34
7.0.20.0400.07020.21
7.0.10.0200.07320.19
7.0.00.0100.08020.16
5.6.280.0030.07320.91
5.6.210.0070.07720.51
5.6.200.0100.06018.12
5.6.190.0000.09320.35
5.6.180.0300.07720.44
5.6.170.0200.07320.71
5.6.160.0100.08320.48
5.6.150.0130.07018.22
5.6.140.0030.07718.18
5.6.130.0000.04318.21
5.6.120.0070.08321.11
5.6.110.0100.08721.11
5.6.100.0070.03721.13
5.6.90.0130.04020.95
5.6.80.0100.05720.52
5.6.70.4470.03720.47
5.5.350.0230.07320.36
5.5.340.0070.03717.92
5.5.330.0070.04320.43
5.5.320.0300.07720.28
5.5.310.0230.07320.28
5.5.300.0130.05717.91
5.5.290.0000.04317.88
5.5.280.0070.05020.84
5.5.270.0170.06720.75
5.5.260.0070.07020.64
5.5.250.0100.08020.46
5.5.240.0370.06320.16
5.4.450.0570.06319.51
5.4.440.0770.05719.60
5.4.430.0330.06019.41
5.4.420.0630.05019.23
5.4.410.0700.05019.36
5.4.400.0130.06018.79
5.4.390.0600.06719.27
5.4.380.0400.05318.52
5.4.370.0270.05718.72
5.4.360.0270.05318.72
5.4.350.0330.06018.53
5.4.340.0270.05718.48
5.4.320.0080.03412.46
5.4.310.0030.04512.45
5.4.300.0050.04312.45
5.4.290.0100.05612.44
5.4.280.0100.05712.33
5.4.270.0090.05512.33
5.4.260.0110.05612.34
5.4.250.0120.05412.33
5.4.240.0120.05312.33
5.4.230.0100.05612.33
5.4.220.0100.07012.32
5.4.210.0150.05412.33
5.4.200.0150.04512.32
5.4.190.0110.06012.32
5.4.180.0150.05912.32
5.4.170.0110.06412.33
5.4.160.0090.06112.33
5.4.150.0100.05012.33
5.4.140.0120.06712.01
5.4.130.0160.08312.00
5.4.120.0160.07611.96
5.4.110.0160.09411.95
5.4.100.0110.05911.95
5.4.90.0150.06411.95
5.4.80.0070.05211.95
5.4.70.0100.05611.95
5.4.60.0140.06011.95
5.4.50.0150.07611.95
5.4.40.0060.06911.93
5.4.30.0130.06111.93
5.4.20.0080.05111.93
5.4.10.0090.05011.93
5.4.00.0090.04911.43
5.3.290.0050.04212.80
5.3.280.0090.06612.70
5.3.270.0160.06212.72
5.3.260.0150.07012.72
5.3.250.0200.06012.72
5.3.240.0150.06412.72
5.3.230.0090.07012.71
5.3.220.0140.06512.68
5.3.210.0110.05012.68
5.3.200.0080.05912.68
5.3.190.0160.06112.68
5.3.180.0110.06412.67
5.3.170.0090.05812.67
5.3.160.0100.06712.67
5.3.150.0170.06112.67
5.3.140.0100.06712.66
5.3.130.0060.07212.66
5.3.120.0110.06012.66
5.3.110.0120.06612.65
5.3.100.0110.06512.12
5.3.90.0100.05212.09
5.3.80.0100.06112.07
5.3.70.0100.06312.08
5.3.60.0080.04912.06
5.3.50.0150.05712.00
5.3.40.0110.06112.00
5.3.30.0140.07911.95
5.3.20.0210.10311.72
5.3.10.0130.05711.70
5.3.00.0060.05211.68
5.2.170.0090.0569.18
5.2.160.0060.0429.18
5.2.150.0080.0559.18
5.2.140.0140.0599.18
5.2.130.0110.0599.14
5.2.120.0150.0749.14
5.2.110.0080.0529.14
5.2.100.0090.0499.14
5.2.90.0060.0469.14
5.2.80.0080.0569.14
5.2.70.0060.0439.13
5.2.60.0090.0439.09
5.2.50.0120.0529.06
5.2.40.0110.0499.04
5.2.30.0140.0459.01
5.2.20.0070.0419.00
5.2.10.0060.0428.92
5.2.00.0070.0528.79
5.1.60.0080.0478.07
5.1.50.0070.0438.06
5.1.40.0050.0488.04
5.1.30.0140.0428.40
5.1.20.0050.0418.42
5.1.10.0100.0328.14
5.1.00.0060.0398.14
5.0.50.0060.0416.62
5.0.40.0060.0266.48
5.0.30.0080.0476.30
5.0.20.0060.0256.27
5.0.10.0040.0286.24
5.0.00.0040.0426.23
4.4.90.0060.0284.78
4.4.80.0050.0294.75
4.4.70.0040.0224.76
4.4.60.0070.0254.75
4.4.50.0070.0264.77
4.4.40.0060.0404.71
4.4.30.0060.0204.76
4.4.20.0060.0204.84
4.4.10.0030.0244.85
4.4.00.0070.0434.76
4.3.110.0070.0284.67
4.3.100.0130.0444.66
4.3.90.0080.0394.63
4.3.80.0130.0464.58
4.3.70.0050.0494.63
4.3.60.0050.0234.63
4.3.50.0050.0254.63
4.3.40.0030.0384.54
4.3.30.0040.0203.28
4.3.20.0060.0183.26
4.3.10.0170.0863.22
4.3.00.0030.02010.31

preferences:
46.42 ms | 401 KiB | 5 Q