3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = array( 'a' => '1', 'b' => 1, 'c' => 1, '1' => '2', 1 => 2, ); var_dump($foo); function change_keys($array, $callback) { return array_combine(array_map($callback, array_combine(array_keys($array), array_keys($array))), $array); } var_dump(change_keys($foo, function($v) { return '#' . $v; }));

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)
8.3.60.0100.00716.75
8.3.50.0090.00920.09
8.3.40.0140.00018.84
8.3.30.0110.00419.11
8.3.20.0000.00720.20
8.3.10.0000.00823.48
8.3.00.0060.00319.13
8.2.180.0140.00718.16
8.2.170.0080.00818.96
8.2.160.0100.00322.96
8.2.150.0000.00824.18
8.2.140.0110.00424.66
8.2.130.0110.00726.16
8.2.120.0040.00421.09
8.2.110.0070.00322.08
8.2.100.0080.00417.84
8.2.90.0080.00019.22
8.2.80.0060.00317.97
8.2.70.0050.00317.63
8.2.60.0080.00018.03
8.2.50.0040.00418.22
8.2.40.0040.00422.32
8.2.30.0000.00719.24
8.2.20.0030.00517.57
8.2.10.0070.00018.00
8.2.00.0000.00717.57
8.1.280.0060.00825.92
8.1.270.0130.00621.79
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0110.00022.59
8.1.230.0000.01117.70
8.1.220.0040.00417.74
8.1.210.0030.00718.77
8.1.200.0030.00617.47
8.1.190.0050.00317.35
8.1.180.0000.00818.10
8.1.170.0000.00818.69
8.1.160.0000.00718.90
8.1.150.0070.00018.85
8.1.140.0050.00317.43
8.1.130.0000.00717.72
8.1.120.0000.00717.38
8.1.110.0000.00717.50
8.1.100.0040.00417.46
8.1.90.0040.00417.52
8.1.80.0030.00517.36
8.1.70.0040.00417.35
8.1.60.0030.00617.65
8.1.50.0000.00817.58
8.1.40.0030.00617.43
8.1.30.0060.00317.60
8.1.20.0000.00717.59
8.1.10.0000.00717.47
8.1.00.0040.00417.47
8.0.300.0040.00418.77
8.0.290.0060.00316.75
8.0.280.0000.00718.38
8.0.270.0040.00417.27
8.0.260.0040.00417.31
8.0.250.0000.00716.89
8.0.240.0000.00716.95
8.0.230.0040.00416.95
8.0.220.0000.00817.00
8.0.210.0000.00816.90
8.0.200.0060.00017.00
8.0.190.0040.00416.95
8.0.180.0030.00616.99
8.0.170.0000.00916.88
8.0.160.0070.00016.92
8.0.150.0000.00816.84
8.0.140.0000.00816.87
8.0.130.0030.00313.27
8.0.120.0000.00816.88
8.0.110.0080.00016.90
8.0.100.0070.00016.73
8.0.90.0030.00516.88
8.0.80.0120.00416.95
8.0.70.0040.00416.74
8.0.60.0070.00016.86
8.0.50.0040.00417.02
8.0.30.0120.01017.15
8.0.20.0050.01417.40
8.0.10.0080.00017.05
8.0.00.0080.01016.77
7.4.330.0020.00315.01
7.4.320.0060.00016.47
7.4.300.0000.00616.66
7.4.290.0070.00016.66
7.4.280.0080.00016.52
7.4.270.0070.00016.45
7.4.260.0030.00316.61
7.4.250.0000.00716.57
7.4.240.0040.00316.59
7.4.230.0000.00816.52
7.4.220.0120.00616.66
7.4.210.0060.01016.50
7.4.200.0070.00016.68
7.4.160.0040.01216.62
7.4.150.0120.01217.40
7.4.140.0120.01017.86
7.4.130.0110.00816.32
7.4.120.0080.01016.60
7.4.110.0120.00416.57
7.4.100.0030.01716.71
7.4.90.0130.00816.45
7.4.80.0120.00919.39
7.4.70.0120.00616.57
7.4.60.0090.01416.55
7.4.50.0030.00316.60
7.4.40.0000.01616.70
7.4.30.0190.00016.38
7.4.10.0150.00414.91
7.4.00.0120.00514.89
7.3.330.0060.00013.25
7.3.320.0000.00513.31
7.3.310.0040.00316.26
7.3.300.0030.00316.26
7.3.290.0040.01116.23
7.3.280.0050.01116.24
7.3.270.0020.01517.40
7.3.260.0090.00916.41
7.3.250.0110.01016.30
7.3.240.0110.00616.57
7.3.230.0040.01316.42
7.3.210.0070.01116.40
7.3.200.0120.00619.39
7.3.190.0080.00816.53
7.3.180.0150.00316.63
7.3.170.0110.00616.36
7.3.160.0060.01016.50
7.3.130.0080.01214.97
7.3.120.0030.00914.57
7.3.110.0070.01314.68
7.3.100.0120.00314.90
7.3.90.0060.00914.80
7.3.80.0040.00714.84
7.3.70.0000.01114.73
7.3.60.0060.00914.98
7.3.50.0030.01014.74
7.3.40.0030.01014.95
7.3.30.0030.00614.79
7.3.20.0080.00816.68
7.3.10.0080.00616.60
7.3.00.0070.00716.70
7.2.330.0040.01416.67
7.2.320.0030.01616.73
7.2.310.0100.01316.66
7.2.300.0110.00616.63
7.2.290.0110.00816.67
7.2.260.0120.00615.18
7.2.250.0030.01314.89
7.2.240.0080.00814.95
7.2.230.0130.00615.13
7.2.220.0060.00915.05
7.2.210.0000.01314.98
7.2.200.0000.01414.73
7.2.190.0060.00814.81
7.2.180.0030.00914.64
7.2.170.0080.00414.96
7.2.160.0040.00814.74
7.2.150.0110.00016.86
7.2.140.0060.00916.95
7.2.130.0060.01116.91
7.2.120.0060.00916.92
7.2.110.0090.00616.78
7.2.100.0060.00616.84
7.2.90.0100.00316.70
7.2.80.0060.00916.91
7.2.70.0040.00716.82
7.2.60.0090.00016.51
7.2.50.0110.00316.89
7.2.40.0070.01016.88
7.2.30.0090.00316.95
7.2.20.0060.01016.66
7.2.10.0030.01016.64
7.2.00.0060.00818.19
7.1.330.0060.00615.69
7.1.320.0120.00315.71
7.1.310.0000.01215.84
7.1.300.0040.00415.66
7.1.290.0110.00015.65
7.1.280.0000.01315.95
7.1.270.0030.00615.49
7.1.260.0070.00715.92
7.1.250.0050.00515.77
7.1.240.0030.00615.66
7.1.230.0060.00615.65
7.1.220.0000.00915.76
7.1.210.0040.00815.74
7.1.200.0110.00415.41
7.1.190.0090.00615.82
7.1.180.0060.00615.58
7.1.170.0110.00415.80
7.1.160.0040.01115.89
7.1.150.0060.00615.73
7.1.140.0030.01315.59
7.1.130.0040.00815.68
7.1.120.0060.00915.49
7.1.110.0090.00615.86
7.1.100.0040.01016.81
7.1.90.0000.00815.75
7.1.80.0030.01215.87
7.1.70.0060.00816.30
7.1.60.0070.00517.62
7.1.50.0100.00716.32
7.1.40.0000.00815.50
7.1.30.0100.00315.74
7.1.20.0120.00415.45
7.1.10.0060.01215.74
7.1.00.0080.03719.11
7.0.330.0070.00715.41
7.0.320.0090.00615.56
7.0.310.0030.00715.41
7.0.300.0070.00415.40
7.0.290.0030.00615.44
7.0.280.0110.00415.41
7.0.270.0080.00415.23
7.0.260.0030.01215.05
7.0.250.0140.00015.29
7.0.240.0050.00515.45
7.0.230.0030.00615.53
7.0.220.0030.01015.59
7.0.210.0030.01015.17
7.0.200.0050.00516.05
7.0.190.0030.01015.33
7.0.180.0070.01015.36
7.0.170.0070.01115.13
7.0.160.0090.00615.47
7.0.150.0000.01415.49
7.0.140.0050.04118.68
7.0.130.0030.01015.20
7.0.120.0040.00815.59
7.0.110.0030.01015.36
7.0.100.0060.00615.45
7.0.90.0000.01015.25
7.0.80.0070.00715.56
7.0.70.0030.00715.34
7.0.60.0080.03017.59
7.0.50.0070.03416.81
7.0.40.0050.02516.86
7.0.30.0190.03416.78
7.0.20.0140.02516.82
7.0.10.0020.02616.76
7.0.00.0060.03816.85
5.6.400.0090.00614.39
5.6.390.0050.00514.50
5.6.380.0000.01114.50
5.6.370.0040.00414.61
5.6.360.0030.01014.51
5.6.350.0060.00314.17
5.6.340.0070.00714.18
5.6.330.0000.01114.46
5.6.320.0000.01514.22
5.6.310.0070.00714.61
5.6.300.0000.01014.17
5.6.290.0070.00714.19
5.6.280.0030.01013.99
5.6.270.0040.01113.91
5.6.260.0120.00314.39
5.6.250.0060.00614.16
5.6.240.0070.00414.21
5.6.230.0040.01214.21
5.6.220.0000.01414.24
5.6.210.0050.02417.48
5.6.200.0050.03016.21
5.6.190.0000.04617.42
5.6.180.2100.02917.42
5.6.170.0100.02617.39
5.6.160.0070.04317.44
5.6.150.0060.04316.23
5.6.140.0100.04316.28
5.6.130.0050.04116.17
5.6.120.0150.01817.63
5.6.110.0060.04617.78
5.6.100.0050.02517.68
5.6.90.0060.04417.77
5.6.80.0100.02017.34
5.6.70.2350.02917.34
5.6.60.0030.01014.28
5.6.50.0090.00614.41
5.6.40.0100.00314.09
5.6.30.0090.00614.46
5.6.20.0070.00414.24
5.6.10.0000.01114.27
5.6.00.0030.00914.21
5.5.380.0070.00714.34
5.5.370.0050.00513.93
5.5.360.0060.00614.02
5.5.350.0050.03217.33
5.5.340.0080.03616.13
5.5.330.0030.04717.14
5.5.320.0150.02517.35
5.5.310.0150.03817.17
5.5.300.0070.04916.14
5.5.290.0020.02816.02
5.5.280.0060.02317.59
5.5.270.0100.04617.68
5.5.260.0030.05017.53
5.5.250.0060.03817.27
5.5.240.0050.04517.12
5.5.230.0040.01113.89
5.5.220.0090.00613.80
5.5.210.0030.00614.23
5.5.200.0030.00813.94
5.5.190.0060.00314.23
5.5.180.0040.00413.90
5.5.170.0060.00314.29
5.5.160.0000.01314.18
5.5.150.0060.00914.33
5.5.140.0040.00413.99
5.5.130.0040.01114.21
5.5.120.0030.01014.31
5.5.110.0060.00614.08
5.5.100.0060.00913.96
5.5.90.0090.00614.07
5.5.80.0120.00314.29
5.5.70.0030.00714.03
5.5.60.0070.00714.19
5.5.50.0100.00314.16
5.5.40.0060.00614.21
5.5.30.0090.00314.13
5.5.20.0110.00314.01
5.5.10.0000.01614.16
5.5.00.0000.01213.75
5.4.450.0050.04215.35
5.4.440.0020.03415.22
5.4.430.0030.04115.06
5.4.420.0080.03314.98
5.4.410.0030.04315.22
5.4.400.0070.02515.17
5.4.390.0070.03615.18
5.4.380.0080.02514.87
5.4.370.0070.03214.93
5.4.360.0080.04214.91
5.4.350.0060.03814.96
5.4.340.0070.03515.02
5.4.330.0070.00211.01
5.4.320.0080.03815.04
5.4.310.0060.03015.07
5.4.300.0020.03215.05
5.4.290.0050.03814.98
5.4.280.0050.03815.13
5.4.270.0090.02914.98
5.4.260.0080.03014.92
5.4.250.0070.02314.99
5.4.240.0080.02815.10
5.4.230.0020.04614.95
5.4.220.0010.02815.10
5.4.210.0050.02014.99
5.4.200.0090.02815.03
5.4.190.0050.03214.97
5.4.180.0050.04015.13
5.4.170.0090.03715.07
5.4.160.0030.04215.04
5.4.150.0110.03615.04
5.4.140.0030.04413.70
5.4.130.0020.02713.80
5.4.120.0030.02513.62
5.4.110.0040.02513.63
5.4.100.0020.02313.81
5.4.90.0020.02213.70
5.4.80.0030.02013.88
5.4.70.0050.02013.64
5.4.60.0000.02213.74
5.4.50.0050.01813.78
5.4.40.0060.02013.81
5.4.30.0060.03513.78
5.4.20.0020.03113.49
5.4.10.0030.03913.63
5.4.00.0020.02913.33
5.3.290.0030.06314.77
5.3.280.0100.06714.65
5.3.270.0000.07714.62
5.3.260.0030.07714.68
5.3.250.0070.07714.77
5.3.240.0030.07014.61
5.3.230.0070.04014.60
5.3.220.0000.04014.64
5.3.210.0030.06314.75
5.3.200.0030.03314.48
5.3.190.0000.04314.64
5.3.180.0000.04014.48
5.3.170.0030.03314.72
5.3.160.0000.03714.55
5.3.150.0000.03714.79
5.3.140.0100.03314.67
5.3.130.0000.08014.46
5.3.120.0000.07314.46
5.3.110.0000.04314.64
5.3.100.0070.04014.16
5.3.90.0000.03714.01
5.3.80.0000.03714.07
5.3.70.0000.03714.14
5.3.60.0030.03713.91
5.3.50.0030.03313.88
5.3.40.0000.03714.00
5.3.30.0000.03714.04
5.3.20.0070.02713.63
5.3.10.0070.03013.59
5.3.00.0000.03713.56
5.2.170.0030.03012.30
5.2.160.0030.02712.30
5.2.150.0030.02712.30
5.2.140.0030.02712.30
5.2.130.0000.03012.30
5.2.120.0030.04312.30
5.2.110.0000.03012.30
5.2.100.0030.02712.30
5.2.90.0000.03012.30
5.2.80.0000.03012.30
5.2.70.0000.03012.30
5.2.60.0000.03312.30
5.2.50.0000.03012.30
5.2.40.0030.02712.30
5.2.30.0000.04712.30
5.2.20.0000.02712.30
5.2.10.0000.02712.30
5.2.00.0000.03012.30
5.1.60.0030.02012.30
5.1.50.0030.02312.30
5.1.40.0000.02712.30
5.1.30.0030.02712.30
5.1.20.0000.02712.30
5.1.10.0000.02312.30
5.1.00.0000.02712.30
5.0.50.0130.01012.30
5.0.40.0000.02012.30
5.0.30.0030.06012.30
5.0.20.0000.02012.30
5.0.10.0030.02312.30
5.0.00.0000.04012.30
4.4.90.0030.01312.30
4.4.80.0000.01312.30
4.4.70.0000.01712.30
4.4.60.0000.02012.30
4.4.50.0000.01312.30
4.4.40.0000.02312.30
4.4.30.0000.01312.30
4.4.20.0000.01312.30
4.4.10.0000.01312.30
4.4.00.0000.03312.30
4.3.110.0000.01312.30
4.3.100.0000.01312.30
4.3.90.0000.01312.30
4.3.80.0000.03712.30
4.3.70.0000.03712.30
4.3.60.0100.02012.30
4.3.50.0000.03012.30
4.3.40.0000.05012.30
4.3.30.0070.03312.30
4.3.20.0000.03312.30
4.3.10.0000.04012.30
4.3.00.0070.03012.30

preferences:
54.51 ms | 400 KiB | 5 Q