3v4l.org

run code in 300+ PHP versions simultaneously
<?php function change_key( $array, $old_key, $new_key) { if( ! array_key_exists( $old_key, $array ) ) return $array; $keys = array_keys( $array ); $keys[ array_search( $old_key, $keys ) ] = $new_key; return array_combine( $keys, $array ); } $array = array( 'a' => 1, 'b' => 2, 'c' => 3 ); var_dump($array); $array = change_key($array, 'b', 'd'); var_dump($array);

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)
8.3.60.0120.00616.75
8.3.50.0080.01321.91
8.3.40.0090.00918.63
8.3.30.0070.00719.25
8.3.20.0050.00320.20
8.3.10.0070.00021.95
8.3.00.0000.00819.21
8.2.180.0090.00918.05
8.2.170.0070.00718.95
8.2.160.0070.00722.96
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0070.00026.16
8.2.120.0090.00019.68
8.2.110.0060.00322.16
8.2.100.0030.00717.91
8.2.90.0060.00319.17
8.2.80.0050.00317.97
8.2.70.0070.00317.63
8.2.60.0040.00418.16
8.2.50.0000.00818.07
8.2.40.0040.00418.16
8.2.30.0030.00619.32
8.2.20.0000.00817.63
8.2.10.0040.00418.23
8.2.00.0050.00317.82
8.1.280.0100.01025.92
8.1.270.0000.00818.80
8.1.260.0070.00026.35
8.1.250.0080.00028.09
8.1.240.0100.00023.96
8.1.230.0080.00319.15
8.1.220.0060.00317.74
8.1.210.0050.00318.77
8.1.200.0030.00917.23
8.1.190.0050.00317.35
8.1.180.0040.00418.10
8.1.170.0030.00518.46
8.1.160.0040.00422.01
8.1.150.0040.00418.88
8.1.140.0050.00217.49
8.1.130.0030.00317.70
8.1.120.0000.00717.46
8.1.110.0000.00817.51
8.1.100.0000.00717.33
8.1.90.0050.00217.54
8.1.80.0050.00217.46
8.1.70.0000.00717.53
8.1.60.0000.00817.44
8.1.50.0060.00617.59
8.1.40.0030.00617.47
8.1.30.0040.00417.63
8.1.20.0050.00217.50
8.1.10.0040.00417.40
8.1.00.0030.00617.52
8.0.300.0000.00720.79
8.0.290.0030.00516.75
8.0.280.0050.00318.32
8.0.270.0070.00017.31
8.0.260.0070.00017.25
8.0.250.0000.00716.94
8.0.240.0030.00316.89
8.0.230.0000.00716.93
8.0.220.0030.00316.88
8.0.210.0030.00316.89
8.0.200.0030.00316.88
8.0.190.0050.00316.89
8.0.180.0040.00416.81
8.0.170.0050.00316.90
8.0.160.0040.00416.81
8.0.150.0040.00416.73
8.0.140.0000.00816.85
8.0.130.0030.00313.36
8.0.120.0030.00616.75
8.0.110.0040.00416.86
8.0.100.0080.00016.76
8.0.90.0040.00416.84
8.0.80.0140.00716.89
8.0.70.0090.00016.79
8.0.60.0070.00016.79
8.0.50.0000.00716.96
8.0.30.0140.00816.99
8.0.20.0060.01217.40
8.0.10.0040.00416.87
8.0.00.0090.01116.83
7.4.330.0050.00015.16
7.4.320.0000.00816.50
7.4.300.0000.00616.61
7.4.290.0040.00416.50
7.4.280.0050.00316.61
7.4.270.0030.00316.63
7.4.260.0030.00316.49
7.4.250.0050.00216.59
7.4.240.0020.00516.63
7.4.230.0030.00316.63
7.4.220.0120.00616.50
7.4.210.0110.00516.51
7.4.200.0030.00316.69
7.4.160.0160.00016.57
7.4.150.0130.00417.40
7.4.140.0080.00917.86
7.4.130.0110.00616.60
7.4.120.0140.00316.41
7.4.110.0060.01116.53
7.4.100.0130.00316.48
7.4.90.0030.01416.44
7.4.80.0150.00919.39
7.4.70.0060.01116.42
7.4.60.0160.00616.38
7.4.50.0040.00016.72
7.4.40.0130.00316.49
7.4.30.0120.00616.66
7.4.00.0060.00615.15
7.3.330.0000.00613.33
7.3.320.0000.00513.37
7.3.310.0070.00016.26
7.3.300.0070.00016.36
7.3.290.0000.00616.32
7.3.280.0090.01016.33
7.3.270.0140.00317.40
7.3.260.0190.00616.21
7.3.250.0080.01016.38
7.3.240.0060.01116.60
7.3.230.0000.01816.54
7.3.210.0000.01816.25
7.3.200.0040.02019.39
7.3.190.0130.01016.36
7.3.180.0120.00416.63
7.3.170.0100.01016.38
7.3.160.0080.00816.51
7.3.120.0100.00714.90
7.3.110.0060.00915.04
7.3.100.0060.00614.69
7.3.90.0040.00814.88
7.3.80.0070.00714.94
7.3.70.0030.00914.80
7.3.60.0080.00414.81
7.3.50.0060.00614.89
7.3.40.0090.00614.72
7.3.30.0060.00314.80
7.3.20.0070.00316.49
7.3.10.0380.00716.66
7.3.00.0030.00716.45
7.2.330.0110.00816.73
7.2.320.0130.00416.52
7.2.310.0050.01316.23
7.2.300.0060.01016.72
7.2.290.0110.00716.70
7.2.240.0030.01014.85
7.2.230.0040.00715.11
7.2.220.0000.01214.91
7.2.210.0060.00915.23
7.2.200.0030.00915.06
7.2.190.0070.00714.95
7.2.180.0070.00714.95
7.2.170.0060.00614.63
7.2.160.0060.00315.08
7.2.150.0040.01116.72
7.2.140.0000.01516.77
7.2.130.0060.00616.76
7.2.120.0000.01316.77
7.2.110.0060.00617.02
7.2.100.0000.01316.89
7.2.90.0030.01016.59
7.2.80.0080.00416.78
7.2.70.0000.01116.88
7.2.60.0110.00316.93
7.2.50.0040.01116.98
7.2.40.0030.01016.81
7.2.30.0000.01116.76
7.2.20.0030.01416.87
7.2.10.0070.00416.84
7.2.00.0060.00617.78
7.1.330.0060.00915.75
7.1.320.0090.00615.42
7.1.310.0100.00315.83
7.1.300.0050.00315.80
7.1.290.0070.00715.66
7.1.280.0000.01115.77
7.1.270.0080.00815.91
7.1.260.0040.00415.72
7.1.250.0000.01415.73
7.1.200.0070.00715.57
7.1.100.0000.01117.95
7.1.70.0040.00417.03
7.1.60.0100.01419.46
7.1.50.0110.00016.99
7.1.00.0130.06022.46
7.0.200.0030.00616.62
7.0.140.0070.06321.99
7.0.60.0200.07721.59
7.0.50.0070.08317.89
7.0.40.0130.07720.25
7.0.30.0200.07020.26
7.0.20.0300.07020.19
7.0.10.0100.03720.13
7.0.00.0130.03320.25
5.6.280.0000.07720.99
5.6.210.0130.07320.71
5.6.200.0100.07318.29
5.6.190.0130.07320.52
5.6.180.0370.04020.52
5.6.170.0330.06320.71
5.6.160.0100.05320.52
5.6.150.0030.05018.16
5.6.140.0030.04318.18
5.6.130.0070.08018.18
5.6.120.0070.09021.02
5.6.110.0100.03721.04
5.6.100.0030.06321.14
5.6.90.0170.07320.98
5.6.80.0000.04320.29
5.5.350.0030.04020.43
5.5.340.0100.07318.09
5.5.330.0070.04020.39
5.5.320.0430.08020.41
5.5.310.0270.08320.23
5.5.300.0130.07317.95
5.5.290.0100.04017.95
5.5.280.0030.04320.97
5.5.270.0100.08020.83
5.5.260.0100.08320.83
5.5.250.0200.07020.50
5.5.240.0070.05020.16
5.4.450.0670.05019.49
5.4.440.0770.06319.19
5.4.430.0500.06019.55
5.4.420.0900.06019.57
5.4.410.0900.04719.48
5.4.400.0730.04719.07
5.4.390.0870.06318.79
5.4.380.0800.05718.57
5.4.370.0700.06018.89
5.4.360.0800.05018.80
5.4.350.0830.05718.86
5.4.340.0930.05018.63
5.4.320.0670.06718.47
5.4.310.0800.05318.76
5.4.300.0830.06718.52
5.4.290.0930.07018.47
5.4.280.0930.05018.58
5.4.270.0030.06318.83
5.4.260.0670.05318.59
5.4.250.0830.07718.56
5.4.240.0870.06718.74
5.4.230.0870.05718.84
5.4.220.1230.04018.45
5.4.210.1200.05318.45
5.4.200.1200.05016.62
5.4.190.0630.05318.77
5.4.180.1100.06718.79
5.4.170.1000.07718.74
5.4.160.0630.06318.78
5.4.150.0900.04318.75
5.4.140.0800.07316.29
5.4.130.0770.05016.22
5.4.120.1000.07316.33
5.4.110.0630.08016.45
5.4.100.1130.06016.42
5.4.90.0700.06316.25
5.4.80.1030.06316.16
5.4.70.0870.05016.14
5.4.60.0530.08016.42
5.4.50.0830.07316.22
5.4.40.0830.06716.25
5.4.30.0800.05316.28
5.4.20.0870.05016.24
5.4.10.0970.04716.26
5.4.00.1200.05715.68
5.3.290.1070.06314.71
5.3.280.1100.07014.69
5.3.270.0870.06314.71
5.3.260.1000.06314.82
5.3.250.0800.07714.80
5.3.240.0870.05314.74
5.3.230.1070.05014.58
5.3.220.0930.06314.61
5.3.210.0900.07714.75
5.3.200.1170.06314.69
5.3.190.1070.05314.66
5.3.180.0730.06314.58
5.3.170.0530.05014.75
5.3.160.0730.06014.67
5.3.150.0600.06314.73
5.3.140.0830.05314.55
5.3.130.0730.06314.77
5.3.120.1070.05714.68
5.3.110.0670.06314.68
5.3.100.1030.05014.10
5.3.90.0470.06314.23
5.3.80.0630.07014.12
5.3.70.0670.06714.06
5.3.60.0870.07014.02
5.3.50.0800.07014.17
5.3.40.0830.05713.95
5.3.30.1000.05314.01
5.3.20.0970.05713.74
5.3.10.0900.04713.69
5.3.00.0770.05713.64
5.2.170.0700.03311.27
5.2.160.0870.04311.35
5.2.150.0800.04011.25
5.2.140.0630.04311.25
5.2.130.0830.04311.17
5.2.120.0900.05011.21
5.2.110.0770.05711.19
5.2.100.1030.05311.11
5.2.90.0900.04311.21
5.2.80.0630.04311.17
5.2.70.0630.04011.12
5.2.60.0730.04711.15
5.2.50.0800.05011.07
5.2.40.0700.05011.00
5.2.30.0730.04311.04
5.2.20.0600.04011.09
5.2.10.0300.05010.91
5.2.00.0770.04010.73
5.1.60.0600.03710.07
5.1.50.0630.03710.06
5.1.40.0700.03310.15
5.1.30.0600.04710.41
5.1.20.0770.03710.41
5.1.10.0500.03310.12
5.1.00.0400.03710.11
5.0.50.0200.0438.54
5.0.40.0470.0378.50
5.0.30.0430.0508.21
5.0.20.0330.0408.40
5.0.10.0270.0308.29
5.0.00.0300.0408.34
4.4.90.0200.0305.89
4.4.80.0300.0275.88
4.4.70.0300.0235.98
4.4.60.0430.0305.88
4.4.50.0270.0235.98
4.4.40.0130.0375.89
4.4.30.0230.0205.92
4.4.20.0300.0275.93
4.4.10.0270.0236.02
4.4.00.0430.0275.99
4.3.110.0230.0305.81
4.3.100.0300.0305.82
4.3.90.0230.0335.85
4.3.80.0170.0405.84
4.3.70.0370.0235.84
4.3.60.0300.0235.88
4.3.50.0270.0235.88
4.3.40.0330.0435.83
4.3.30.0130.0275.13
4.3.20.0170.0305.13
4.3.10.0070.0205.13
4.3.00.0100.0279.22

preferences:
59.82 ms | 401 KiB | 5 Q