3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = array( 'x' => '1x', 'y' => 'fgd', 'z' => 'fd', 'f' =>'fg', ); $y = array_keys( $x ); debug_zval_dump( $x ); echo "\n"; debug_zval_dump( $y );

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)
8.3.60.0070.00718.28
8.3.50.0080.00821.02
8.3.40.0090.00918.54
8.3.30.0110.00420.02
8.3.20.0040.00420.26
8.3.10.0050.00322.06
8.3.00.0040.00422.46
8.2.180.0090.00616.63
8.2.170.0100.00722.96
8.2.160.0130.00022.18
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00420.72
8.2.110.0090.00019.31
8.2.100.0110.00017.91
8.2.90.0050.00219.23
8.2.80.0000.00818.05
8.2.70.0040.00417.38
8.2.60.0030.00517.93
8.2.50.0060.00318.07
8.2.40.0050.00318.21
8.2.30.0050.00219.44
8.2.20.0000.00717.47
8.2.10.0040.00417.61
8.2.00.0070.00317.66
8.1.280.0110.00425.92
8.1.270.0000.00823.99
8.1.260.0080.00026.35
8.1.250.0060.00328.09
8.1.240.0040.00422.51
8.1.230.0040.00820.89
8.1.220.0040.00418.77
8.1.210.0040.00419.02
8.1.200.0040.00417.10
8.1.190.0060.00317.39
8.1.180.0040.00418.10
8.1.170.0040.00418.57
8.1.160.0020.00518.72
8.1.150.0040.00418.58
8.1.140.0000.00717.30
8.1.130.0000.00717.71
8.1.120.0080.00017.43
8.1.110.0040.00417.36
8.1.100.0040.00417.26
8.1.90.0000.00717.29
8.1.80.0000.00717.42
8.1.70.0030.00317.30
8.1.60.0030.00617.40
8.1.50.0030.00617.43
8.1.40.0000.00717.46
8.1.30.0040.00417.38
8.1.20.0040.00417.60
8.1.10.0040.00417.49
8.1.00.0040.00817.30
8.0.300.0030.00320.02
8.0.290.0000.00717.04
8.0.280.0080.00018.37
8.0.270.0030.00317.23
8.0.260.0030.00316.68
8.0.250.0040.00416.94
8.0.240.0040.00416.77
8.0.230.0070.00016.77
8.0.220.0070.00016.78
8.0.210.0000.00716.75
8.0.200.0030.00316.87
8.0.190.0040.00416.73
8.0.180.0000.00716.87
8.0.170.0000.00816.73
8.0.160.0040.00416.80
8.0.150.0000.00716.62
8.0.140.0100.00016.66
8.0.130.0000.00613.29
8.0.120.0000.00716.76
8.0.110.0000.00716.73
8.0.100.0000.00716.82
8.0.90.0040.00416.88
8.0.80.0190.00616.79
8.0.70.0050.00316.65
8.0.60.0040.00416.82
8.0.50.0040.00416.83
8.0.30.0090.00916.90
8.0.20.0090.00917.40
8.0.10.0050.00316.91
8.0.00.0130.00716.77
7.4.330.0040.00014.88
7.4.320.0070.00016.56
7.4.300.0030.00316.53
7.4.290.0040.00416.44
7.4.280.0050.00316.49
7.4.270.0000.00716.34
7.4.260.0030.00313.20
7.4.250.0000.00716.49
7.4.240.0030.00316.47
7.4.230.0070.00016.54
7.4.220.0130.00616.46
7.4.210.0090.00816.57
7.4.200.0070.00016.55
7.4.190.0040.00416.38
7.4.160.0080.00816.48
7.4.150.0170.00017.40
7.4.140.0050.01317.86
7.4.130.0100.00816.50
7.4.120.0090.00916.40
7.4.110.0100.01016.35
7.4.100.0150.00316.41
7.4.90.0130.00616.34
7.4.80.0030.01519.39
7.4.70.0000.01716.48
7.4.60.0070.01416.53
7.4.50.0000.00916.60
7.4.40.0040.00822.77
7.4.30.0170.00616.33
7.4.00.0100.00314.85
7.3.330.0050.00013.02
7.3.320.0070.00012.88
7.3.310.0000.00616.06
7.3.300.0030.00316.11
7.3.290.0150.00616.20
7.3.280.0080.00716.14
7.3.270.0150.00317.40
7.3.260.0150.00916.18
7.3.250.0110.00916.29
7.3.240.0060.01216.31
7.3.230.0040.01416.39
7.3.210.0070.01016.43
7.3.200.0040.01719.39
7.3.190.0040.01216.17
7.3.180.0150.00716.11
7.3.170.0110.00616.29
7.3.160.0110.00716.34
7.3.120.0060.00914.61
7.2.330.0140.00416.57
7.2.320.0130.00616.29
7.2.310.0070.01116.66
7.2.300.0150.00916.53
7.2.290.0000.01716.71
7.2.60.0100.00316.94
7.2.00.0060.00619.34
7.1.200.0130.00615.63
7.1.100.0000.01118.14
7.1.70.0000.01017.06
7.1.60.0070.01819.21
7.1.50.0240.01434.36
7.1.00.0000.03722.32
7.0.200.0070.00016.66
7.0.140.0030.07321.99
7.0.60.0170.07719.91
7.0.50.0030.08017.71
7.0.40.0130.08020.20
7.0.30.0300.04720.13
7.0.20.0330.07720.02
7.0.10.0330.08320.04
7.0.00.0070.04020.29
5.6.280.0030.07721.03
5.6.210.0100.07320.60
5.6.200.0070.04018.12
5.6.190.0070.09720.48
5.6.180.0200.07320.74
5.6.170.0370.05720.41
5.6.160.0070.04020.46
5.6.150.0070.08318.21
5.6.140.0070.04718.09
5.6.130.0030.06318.15
5.6.120.0200.07721.00
5.6.110.0170.04720.98
5.6.100.0030.06021.01
5.6.90.0200.07320.97
5.6.80.0000.04320.33
5.6.70.0270.07320.38
5.5.350.0270.07720.38
5.5.340.0000.05017.98
5.5.330.0130.07720.40
5.5.320.0130.06320.15
5.5.310.0330.05320.18
5.5.300.0170.06717.98
5.5.290.0100.05318.00
5.5.280.0170.07720.77
5.5.270.0100.08020.88
5.5.260.0130.07320.83
5.5.250.0030.04020.57
5.5.240.0030.04020.03
5.4.450.0370.06719.57
5.4.440.0400.07019.48
5.4.430.0300.07319.26
5.4.420.0330.05719.43
5.4.410.0200.05019.44
5.4.400.0430.06019.10
5.4.390.0270.06718.89
5.4.380.0300.06318.88
5.4.370.0300.07019.05
5.4.360.0270.05319.08
5.4.350.0430.06319.13
5.4.340.0330.06718.88
5.4.320.0230.04719.06
5.4.310.0300.04719.09
5.4.300.0270.05719.21
5.4.290.0230.06718.78
5.4.280.0400.06319.17
5.4.270.0270.04319.13
5.4.260.0270.07319.13
5.4.250.0400.05319.07
5.4.240.0330.05719.21
5.4.230.0230.05718.88
5.4.220.0270.03719.07
5.4.210.0330.07019.13
5.4.200.0330.06018.78
5.4.190.0330.03019.02
5.4.180.0330.06318.79
5.4.170.0330.07018.80
5.4.160.0330.05718.90
5.4.150.0330.06719.09
5.4.140.0300.05716.26
5.4.130.0270.05316.45
5.4.120.0330.05316.44
5.4.110.0200.04016.51
5.4.100.0230.07316.46
5.4.90.0300.03716.35
5.4.80.0330.06316.05
5.4.70.0330.06716.21
5.4.60.0370.05716.20
5.4.50.0330.06316.03
5.4.40.0270.03716.36
5.4.30.0230.03716.03
5.4.20.0300.04316.38
5.4.10.0370.03716.38
5.4.00.0370.06015.90
5.3.290.0370.06014.59
5.3.280.0300.05714.50
5.3.270.0300.07314.44
5.3.260.0300.05014.56
5.3.250.0270.05714.51
5.3.240.0270.04014.48
5.3.230.0300.05314.43
5.3.220.0300.06314.42
5.3.210.0330.06714.51
5.3.200.0370.05714.59
5.3.190.0330.04014.61
5.3.180.0300.06314.55
5.3.170.0270.06714.42
5.3.160.0270.07014.36
5.3.150.0300.06314.44
5.3.140.0400.06014.60
5.3.130.0270.04014.45
5.3.120.0200.04014.40
5.3.110.0270.03714.39
5.3.100.0270.06013.85
5.3.90.0230.05013.93
5.3.80.0330.06713.99
5.3.70.0300.05313.99
5.3.60.0230.06314.03
5.3.50.0230.05013.79
5.3.40.0300.06313.93
5.3.30.0300.05713.96
5.3.20.0370.04313.73
5.3.10.0270.03313.51
5.3.00.0270.04713.51
5.2.170.0230.03012.02
5.2.160.0230.04012.02
5.2.150.0230.03312.02
5.2.140.0370.05012.02
5.2.130.0230.03712.02
5.2.120.0230.03012.02
5.2.110.0230.05712.02
5.2.100.0200.03312.02
5.2.90.0200.03312.02
5.2.80.0230.02712.02
5.2.70.0270.06012.02
5.2.60.0200.06312.02
5.2.50.0270.04712.02
5.2.40.0230.06012.02
5.2.30.0270.05012.02
5.2.20.0230.05012.02
5.2.10.0170.03012.02
5.2.00.0170.02712.02
5.1.60.0130.02312.02
5.1.50.0130.02712.02
5.1.40.0130.03012.02
5.1.30.0130.03312.02
5.1.20.0070.03312.02
5.1.10.0100.02712.02
5.1.00.0130.02312.02
5.0.50.0030.02312.02
5.0.40.0070.02012.02
5.0.30.0030.03312.02
5.0.20.0030.02312.02
5.0.10.0070.01712.02
5.0.00.0030.03312.02
4.4.90.0100.03712.02
4.4.80.0100.03312.02
4.4.70.0100.01312.02
4.4.60.0100.01312.02
4.4.50.0070.01712.02
4.4.40.0000.03012.02
4.4.30.0030.01712.02
4.4.20.0030.01712.02
4.4.10.0170.00712.02
4.4.00.0100.02012.02
4.3.110.0070.01312.02
4.3.100.0000.02012.02
4.3.90.0030.01712.02
4.3.80.0070.02312.02
4.3.70.0070.01312.02
4.3.60.0070.01312.02
4.3.50.0100.01312.02
4.3.40.0070.02712.02
4.3.30.0030.01312.02
4.3.20.0000.01712.02
4.3.10.0030.01312.02
4.3.00.0000.01712.02

preferences:
37.08 ms | 401 KiB | 5 Q