3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( 'a' => 'A', 'b' => 'B', 'c' => 'C'); var_dump($arr); // Taking "$val" as a reference here allows modifying the parent hashtable // directly, i.e. the $val ref "knows" its parent key in some sense foreach ($arr as &$val) { if ($val == 'B') { $val = 'X'; } } var_dump($arr); // However, it doesn't allow you to unset the parent key... foreach ($arr as &$val) { if ($val == 'A') { unset($val); } } var_dump($arr);

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)
8.3.40.0070.00718.76
8.3.30.0090.00618.59
8.3.20.0040.00418.40
8.3.10.0040.00419.25
8.3.00.0000.00823.73
8.2.170.0060.01222.96
8.2.160.0070.00720.47
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0030.00619.23
8.2.110.0030.00822.01
8.2.100.0090.00317.66
8.2.90.0040.00419.09
8.2.80.0000.00817.97
8.2.70.0100.00017.63
8.2.60.0080.00017.80
8.2.50.0000.00818.07
8.2.40.0000.00918.34
8.2.30.0060.00319.77
8.2.20.0080.00017.63
8.2.10.0040.00417.72
8.2.00.0000.00817.70
8.1.270.0070.00023.99
8.1.260.0040.00426.35
8.1.250.0050.00228.09
8.1.240.0000.00922.51
8.1.230.0070.00420.98
8.1.220.0000.00818.77
8.1.210.0030.00518.91
8.1.200.0030.00617.35
8.1.190.0000.00817.51
8.1.180.0050.00318.10
8.1.170.0080.00018.59
8.1.160.0040.00418.95
8.1.150.0040.00418.68
8.1.140.0040.00417.45
8.1.130.0050.00317.70
8.1.120.0000.00717.47
8.1.110.0110.00017.43
8.1.100.0080.00017.41
8.1.90.0040.00417.42
8.1.80.0030.00517.50
8.1.70.0070.00017.40
8.1.60.0040.00417.47
8.1.50.0000.00817.52
8.1.40.0000.00917.51
8.1.30.0040.00417.54
8.1.20.0030.00517.63
8.1.10.0040.00417.41
8.1.00.0060.00617.31
8.0.300.0040.00419.98
8.0.290.0070.00017.04
8.0.280.0050.00318.44
8.0.270.0040.00417.25
8.0.260.0000.00716.82
8.0.250.0000.01016.93
8.0.240.0000.00817.00
8.0.230.0030.00316.93
8.0.220.0000.00716.78
8.0.210.0040.00416.86
8.0.200.0030.00516.95
8.0.190.0000.00716.96
8.0.180.0040.00416.88
8.0.170.0070.00016.91
8.0.160.0000.00716.96
8.0.150.0040.00416.74
8.0.140.0050.00216.92
8.0.130.0050.00013.29
8.0.120.0030.00316.88
8.0.110.0000.00816.93
8.0.100.0040.00416.84
8.0.90.0000.00816.80
8.0.80.0090.00616.93
8.0.70.0070.00016.85
8.0.60.0050.00216.91
8.0.50.0030.00516.77
8.0.30.0110.00716.95
8.0.20.0120.00717.40
8.0.10.0080.00017.02
8.0.00.0070.01316.55
7.4.330.0020.00214.79
7.4.320.0000.00716.61
7.4.300.0030.00316.59
7.4.290.0030.00316.61
7.4.280.0030.00516.42
7.4.270.0030.00316.51
7.4.260.0000.00513.20
7.4.250.0040.00416.36
7.4.240.0040.00316.51
7.4.230.0000.00716.71
7.4.220.0090.00916.45
7.4.210.0070.00716.53
7.4.200.0000.00716.33
7.4.190.0080.00416.66
7.4.160.0080.00816.51
7.4.150.0110.00817.40
7.4.140.0120.00917.86
7.4.130.0080.00916.65
7.4.120.0070.01016.60
7.4.110.0140.00416.30
7.4.100.0140.00316.70
7.4.90.0070.01116.39
7.4.80.0080.01119.37
7.4.70.0060.01016.48
7.4.60.0090.00616.37
7.4.50.0050.00316.34
7.4.40.0160.00022.27
7.4.30.0140.00416.47
7.4.00.0100.00814.83
7.3.330.0030.00313.20
7.3.320.0050.00013.12
7.3.310.0040.00416.31
7.3.300.0050.00216.06
7.3.290.0070.00716.31
7.3.280.0090.00716.31
7.3.270.0070.01117.40
7.3.260.0050.01218.24
7.3.250.0110.00816.40
7.3.240.0100.00716.35
7.3.230.0040.01216.39
7.3.210.0180.00616.34
7.3.200.0100.00719.39
7.3.190.0090.01316.60
7.3.180.0180.00416.41
7.3.170.0100.01016.45
7.3.160.0100.00716.45
7.3.120.0090.00914.88
7.3.110.0090.00914.70
7.3.100.0080.00614.75
7.3.90.0030.00914.87
7.3.80.0000.01614.86
7.3.70.0000.01514.81
7.3.60.0070.00314.95
7.3.50.0040.00814.87
7.3.40.0000.00914.88
7.3.30.0090.00614.69
7.3.20.0100.00316.49
7.3.10.0060.00916.67
7.3.00.0030.01316.69
7.2.330.0110.00716.68
7.2.320.0030.01416.75
7.2.310.0140.00716.72
7.2.300.0130.00316.36
7.2.290.0200.00316.63
7.2.250.0040.01515.21
7.2.240.0070.01415.13
7.2.230.0030.00715.19
7.2.220.0000.01015.18
7.2.210.0160.00314.79
7.2.200.0030.01114.72
7.2.190.0110.00614.77
7.2.180.0000.01514.85
7.2.170.0030.00615.08
7.1.330.0090.00615.91
7.1.320.0000.01115.81
7.1.310.0070.00715.87
7.1.300.0030.01015.79
7.1.290.0120.00316.00
7.1.280.0120.00315.46
7.1.270.0100.00715.80
7.1.260.0090.00615.65
7.1.70.0000.00817.10
7.1.60.0060.01319.40
7.1.50.0200.01016.95
7.1.00.0030.07722.28
7.0.200.0040.00416.68
7.0.140.0000.07722.07
7.0.60.0070.07319.78
7.0.50.0070.03717.88
7.0.40.0070.06317.74
7.0.30.0000.08017.73
7.0.20.0170.07017.79
7.0.10.0100.05017.77
7.0.00.0030.08017.72
5.6.280.0030.07320.78
5.6.210.0130.07020.47
5.6.200.0030.08318.08
5.6.190.0070.06718.20
5.6.180.0200.05018.22
5.6.170.0070.05018.13
5.6.160.0070.05318.22
5.6.150.0070.08318.07
5.6.140.0000.07018.21
5.6.130.0100.04318.12
5.6.120.0030.04318.12
5.6.110.0030.06718.16
5.6.100.0170.05018.16
5.6.90.0070.04018.14
5.6.80.0000.05317.55
5.6.70.0000.07017.53
5.6.60.0070.05017.55
5.6.50.0030.04017.54
5.6.40.0070.04717.54
5.6.30.0130.06717.52
5.6.20.0000.04317.46
5.6.10.0000.05717.41
5.6.00.0100.07017.53
5.5.350.0030.08320.33
5.5.340.0000.07717.96
5.5.330.0130.07717.98
5.5.320.0100.07718.01
5.5.310.0130.05317.89
5.5.300.0100.06317.96
5.5.290.0000.05317.88
5.5.280.0070.08018.05
5.5.270.0100.04017.96
5.5.260.0170.07317.97
5.5.250.0030.07717.77
5.5.240.0030.08017.40
5.5.230.0030.08017.32
5.5.220.0000.04317.34
5.5.210.0170.04317.31
5.5.200.0030.07717.28
5.5.190.0070.06017.33
5.5.180.0070.06017.34
5.5.160.0070.07717.27
5.5.150.0000.05317.22
5.5.140.0070.07017.32
5.5.130.0100.07717.22
5.5.120.0000.05717.25
5.5.110.0000.05017.26
5.5.100.0070.04017.13
5.5.90.0130.07017.27
5.5.80.0170.05317.27
5.5.70.0030.08317.21
5.5.60.0070.07017.25
5.5.50.0030.07717.29
5.5.40.0070.03317.14
5.5.30.0030.08317.23
5.5.20.0070.07317.24
5.5.10.0070.04017.25
5.5.00.0030.06717.11
5.4.450.0030.05019.36
5.4.440.0100.07719.31
5.4.430.0030.08319.41
5.4.420.0070.07719.41
5.4.410.0000.07019.23
5.4.400.0100.04019.01
5.4.390.0030.04019.21
5.4.380.0070.03319.03
5.4.370.0000.05718.98
5.4.360.0100.04319.11
5.4.350.0000.07019.21
5.4.340.0130.04719.13
5.4.320.0100.06018.98
5.4.310.0100.07718.98
5.4.300.0070.04719.20
5.4.290.0030.05019.03
5.4.280.0070.05018.99
5.4.270.0070.05018.96
5.4.260.0070.07019.00
5.4.250.0070.06718.96
5.4.240.0030.07719.00
5.4.230.0070.04719.11
5.4.220.0070.07018.88
5.4.210.0100.06319.11
5.4.200.0070.03718.98
5.4.190.0070.04319.08
5.4.180.0070.07718.88
5.4.170.0000.05718.95
5.4.160.0070.06718.93
5.4.150.0070.07719.03
5.4.140.0000.06016.33
5.4.130.0030.04016.30
5.4.120.0030.04316.47
5.4.110.0030.06016.28
5.4.100.0130.06716.28
5.4.90.0030.04316.25
5.4.80.0100.04016.41
5.4.70.0100.07316.45
5.4.60.0130.06716.36
5.4.50.0000.08016.30
5.4.40.0030.08016.29
5.4.30.0100.06316.33
5.4.20.0070.07016.38
5.4.10.0030.06716.54
5.4.00.0070.03715.61
5.3.290.0170.06714.61
5.3.280.0170.07014.55
5.3.270.0030.08014.46
5.3.260.0070.04014.55
5.3.250.0070.07014.43
5.3.240.0030.08014.59
5.3.230.0070.06714.41
5.3.220.0130.06314.53
5.3.210.0100.03714.55
5.3.200.0100.06314.53
5.3.190.0070.07014.64
5.3.180.0070.08014.49
5.3.170.0030.04714.51
5.3.160.0130.03714.42
5.3.150.0000.04714.52
5.3.140.0000.08014.41
5.3.130.0070.06314.48
5.3.120.0030.05014.45
5.3.110.0100.04314.53
5.3.100.0070.04013.85
5.3.90.0070.03713.86
5.3.80.0070.05013.77
5.3.70.0000.04013.98
5.3.60.0030.04313.96
5.3.50.0070.03313.87
5.3.40.0070.07313.90
5.3.30.0030.05013.98
5.3.20.0170.07013.66
5.3.10.0070.07313.41
5.3.00.0000.07313.57
5.2.170.0030.06310.93
5.2.160.0030.03711.12
5.2.150.0000.03311.17
5.2.140.0030.07011.29
5.2.130.0030.04710.93
5.2.120.0070.06311.14
5.2.110.0070.03011.07
5.2.100.0100.03311.02
5.2.90.0100.05711.09
5.2.80.0000.05011.04
5.2.70.0030.06711.00
5.2.60.0070.06311.00
5.2.50.0100.05310.87
5.2.40.0070.03710.96
5.2.30.0000.05311.00
5.2.20.0030.06010.93
5.2.10.0030.05011.00
5.2.00.0070.04010.77
5.1.60.0030.0539.98
5.1.50.0000.0339.91
5.1.40.0100.0339.90
5.1.30.0030.06010.27
5.1.20.0000.05310.31
5.1.10.0000.0309.91
5.1.00.0000.0409.90
5.0.50.0030.0238.61
5.0.40.0070.0408.43
5.0.30.0030.0608.36
5.0.20.0030.0408.04
5.0.10.0030.0238.22
5.0.00.0000.0408.06
4.4.90.0030.0237.73
4.4.80.0070.0337.73
4.4.70.0070.0337.73
4.4.60.0070.0337.73
4.4.50.0000.0377.73
4.4.40.0030.0307.73
4.4.30.0000.0377.73
4.4.20.0000.0337.73
4.4.10.0030.0277.73
4.4.00.0070.0507.73
4.3.110.0070.0307.73
4.3.100.0030.0337.73
4.3.90.0030.0207.73
4.3.80.0030.0507.73
4.3.70.0030.0337.73
4.3.60.0030.0377.73
4.3.50.0000.0337.73
4.3.40.0000.0407.73
4.3.30.0000.0307.73
4.3.20.0030.0337.73
4.3.10.0030.0207.73
4.3.00.0000.0377.73

preferences:
49.93 ms | 400 KiB | 5 Q