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') { $val = 'X'; } } unset($arr['b']); var_dump($arr); // However, it doesn't allow you to unset the parent key... foreach ($arr as &$val) { if ($val == 'B') { } } 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)
8.3.60.0140.00418.14
8.3.50.0130.00721.21
8.3.40.0140.00718.85
8.3.30.0140.00018.72
8.3.20.0080.00018.57
8.3.10.0080.00020.89
8.3.00.0040.00423.53
8.2.180.0140.00316.38
8.2.170.0140.00722.96
8.2.160.0060.00918.86
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00019.66
8.2.110.0100.00020.52
8.2.100.0090.00317.84
8.2.90.0000.00819.30
8.2.80.0000.00818.05
8.2.70.0060.00317.71
8.2.60.0000.00818.05
8.2.50.0000.00918.07
8.2.40.0080.00018.03
8.2.30.0000.00721.21
8.2.20.0000.00717.58
8.2.10.0080.00017.70
8.2.00.0030.00517.73
8.1.270.0070.00023.99
8.1.260.0030.00526.35
8.1.250.0000.00828.09
8.1.240.0110.00022.50
8.1.230.0030.00720.85
8.1.220.0040.00418.77
8.1.210.0000.00818.97
8.1.200.0090.00017.47
8.1.190.0000.00817.55
8.1.180.0000.00818.10
8.1.170.0000.00818.50
8.1.160.0040.00418.81
8.1.150.0050.00318.62
8.1.140.0050.00217.39
8.1.130.0070.00017.87
8.1.120.0000.00717.48
8.1.110.0100.00017.32
8.1.100.0040.00417.49
8.1.90.0000.00817.46
8.1.80.0000.00817.44
8.1.70.0030.00317.46
8.1.60.0040.00417.61
8.1.50.0080.00017.38
8.1.40.0000.00817.51
8.1.30.0040.00417.66
8.1.20.0030.00517.59
8.1.10.0040.00417.45
8.1.00.0000.00717.45
8.0.300.0040.00419.89
8.0.290.0000.00717.18
8.0.280.0070.00018.46
8.0.270.0080.00317.13
8.0.260.0040.00216.80
8.0.250.0000.00716.94
8.0.240.0060.00316.94
8.0.230.0060.00016.93
8.0.220.0060.00316.78
8.0.210.0000.00716.89
8.0.200.0000.00716.98
8.0.190.0080.00016.85
8.0.180.0000.00716.82
8.0.170.0080.00016.93
8.0.160.0030.00316.93
8.0.150.0000.01016.82
8.0.140.0040.00416.79
8.0.130.0000.00813.40
8.0.120.0050.00316.75
8.0.110.0000.00716.95
8.0.100.0000.00816.77
8.0.90.0030.00316.85
8.0.80.0030.01316.78
8.0.70.0000.00716.91
8.0.60.0080.00016.80
8.0.50.0000.00816.67
8.0.30.0070.01217.09
8.0.20.0130.00717.40
8.0.10.0040.00416.98
8.0.00.0110.00716.77
7.4.330.0030.00314.79
7.4.320.0000.00616.63
7.4.300.0030.00316.41
7.4.290.0000.00716.49
7.4.280.0050.00316.51
7.4.270.0030.00316.37
7.4.260.0030.00313.28
7.4.250.0000.00816.62
7.4.240.0000.00716.41
7.4.230.0000.00716.26
7.4.220.0100.01016.54
7.4.210.0090.00616.60
7.4.200.0030.00316.69
7.4.190.0000.00716.63
7.4.160.0100.01316.51
7.4.150.0100.01017.40
7.4.140.0130.00817.86
7.4.130.0120.00916.53
7.4.120.0140.00516.39
7.4.110.0040.01216.59
7.4.100.0090.00916.42
7.4.90.0000.01916.48
7.4.80.0130.00319.37
7.4.70.0130.00316.55
7.4.60.0060.01216.44
7.4.50.0030.00316.47
7.4.40.0060.00922.52
7.4.30.0030.01316.54
7.4.10.0070.01014.84
7.4.00.0070.01014.93
7.3.330.0050.00013.01
7.3.320.0130.00013.11
7.3.310.0030.00316.20
7.3.300.0030.00516.25
7.3.290.0090.00916.31
7.3.280.0080.00916.26
7.3.270.0150.00617.40
7.3.260.0150.00518.24
7.3.250.0130.00416.27
7.3.240.0060.00916.51
7.3.230.0070.01416.59
7.3.210.0120.00616.57
7.3.200.0060.01219.39
7.3.190.0160.00016.21
7.3.180.0130.00716.59
7.3.170.0080.00816.33
7.3.160.0130.00316.37
7.3.130.0090.00914.88
7.3.120.0070.00914.55
7.3.110.0070.00814.70
7.3.100.0030.01014.57
7.3.90.0080.00514.80
7.3.80.0030.01014.54
7.3.70.0050.00914.69
7.3.60.0030.00914.64
7.3.50.0070.00914.81
7.3.40.0060.00714.71
7.3.30.0070.00614.79
7.3.20.0070.00816.70
7.3.10.0100.00616.66
7.3.00.0030.00816.59
7.2.330.0080.01216.52
7.2.320.0070.01116.60
7.2.310.0130.01016.61
7.2.300.0080.01116.80
7.2.290.0140.00316.64
7.2.260.0070.01114.97
7.2.250.0100.00714.99
7.2.240.0040.00815.07
7.2.230.0050.01214.76
7.2.220.0070.00915.15
7.2.210.0090.00514.97
7.2.200.0060.00815.01
7.2.190.0060.00815.05
7.2.180.0070.00914.89
7.2.170.0080.00515.03
7.2.160.0070.00614.98
7.2.150.0010.01316.77
7.2.140.0080.00716.89
7.2.130.0090.00616.83
7.2.120.0090.00616.93
7.2.110.0110.00416.86
7.2.100.0070.00616.88
7.2.90.0070.00616.76
7.2.80.0040.00816.90
7.2.70.0080.00816.77
7.2.60.0090.00216.99
7.2.50.0060.00916.64
7.2.40.0070.00716.95
7.2.30.0090.00516.94
7.2.20.0090.00616.84
7.2.10.0060.00816.83
7.2.00.0060.00916.86
7.1.330.0070.00815.88
7.1.320.0040.01115.60
7.1.310.0030.01215.82
7.1.300.0060.00715.67
7.1.290.0040.00715.81
7.1.280.0010.01015.81
7.1.270.0060.00915.69
7.1.260.0070.00815.75
7.1.250.0040.00915.77
7.1.240.0000.01415.68
7.1.230.0030.01315.68
7.1.220.0030.00815.73
7.1.210.0070.00715.66
7.1.200.0100.00715.91
7.1.190.0070.00715.69
7.1.180.0030.00915.71
7.1.170.0070.00715.68
7.1.160.0060.00615.73
7.1.150.0040.01415.77
7.1.140.0140.00015.86
7.1.130.0060.00315.87
7.1.120.0030.00615.70
7.1.110.0080.00415.93
7.1.100.0050.00516.03
7.1.90.0070.01015.81
7.1.80.0060.00615.72
7.1.70.0050.00716.45
7.1.60.0080.00817.63
7.1.50.0030.01416.21
7.1.40.0000.01115.90
7.1.30.0060.00315.72
7.1.20.0070.00715.84
7.1.10.0030.00615.80
7.1.00.0050.02619.17
7.0.330.0130.00315.45
7.0.320.0090.00615.37
7.0.310.0090.00615.16
7.0.300.0040.01115.29
7.0.290.0100.00315.30
7.0.280.0040.00815.43
7.0.270.0040.00815.18
7.0.260.0050.00515.56
7.0.250.0090.00015.15
7.0.240.0030.00915.39
7.0.230.0060.00315.22
7.0.220.0030.00915.41
7.0.210.0000.00815.39
7.0.200.0030.00815.96
7.0.190.0000.01315.22
7.0.180.0030.01015.58
7.0.170.0130.00315.48
7.0.160.0040.01115.49
7.0.150.0000.00815.52
7.0.140.0060.03718.75
7.0.130.0080.00815.51
7.0.120.0030.00915.57
7.0.110.0030.00615.41
7.0.100.0090.00615.46
7.0.90.0060.00915.38
7.0.80.0060.00815.37
7.0.70.0060.04618.45
7.0.60.0080.03818.59
7.0.50.0050.04618.83
7.0.40.0090.04416.72
7.0.30.0020.05016.74
7.0.20.0030.04516.77
7.0.10.0080.04516.84
7.0.00.0080.02516.78
5.6.400.0070.00314.24
5.6.390.0040.01114.40
5.6.380.0040.01114.11
5.6.370.0070.00714.45
5.6.360.0090.00614.61
5.6.350.0120.00614.52
5.6.340.0000.01314.08
5.6.330.0090.00314.54
5.6.320.0030.01014.32
5.6.310.0110.00314.73
5.6.300.0070.00414.08
5.6.290.0060.00914.57
5.6.280.0050.04217.56
5.6.270.0000.01314.36
5.6.260.0070.00714.18
5.6.250.0080.00614.12
5.6.240.0060.01214.56
5.6.230.0060.01314.61
5.6.220.0050.04617.49
5.6.210.0070.02717.58
5.6.200.0070.04717.74
5.6.190.0020.05417.75
5.6.180.0030.04317.74
5.6.170.0020.04017.69
5.6.160.0030.04717.75
5.6.150.0070.04017.63
5.6.140.0050.03417.60
5.6.130.0080.03217.58
5.6.120.0060.04517.76
5.6.110.0050.04317.66
5.6.100.0030.03317.61
5.6.90.0080.03117.58
5.6.80.0050.03817.37
5.6.70.0040.04717.37
5.6.60.0070.02217.33
5.6.50.0060.04117.27
5.6.40.0070.04617.38
5.6.30.0050.02817.36
5.6.20.0080.03317.35
5.6.10.0080.03817.31
5.6.00.0050.02717.43
5.5.380.0100.01014.47
5.5.370.0040.01114.02
5.5.360.0060.04517.37
5.5.350.0070.02817.35
5.5.340.0050.04617.44
5.5.330.0070.04917.68
5.5.320.0110.03917.52
5.5.310.0000.03717.73
5.5.300.0070.02217.68
5.5.290.0080.04317.53
5.5.280.0020.05117.55
5.5.270.0070.04017.38
5.5.260.0070.04517.42
5.5.250.0070.04317.47
5.5.240.0060.03317.14
5.5.230.0050.03717.11
5.5.220.0050.02817.18
5.5.210.0050.03617.08
5.5.200.0030.03317.11
5.5.190.0030.04017.21
5.5.180.0030.04617.12
5.5.170.0030.01314.11
5.5.160.0100.03217.26
5.5.150.0050.04317.37
5.5.140.0080.04517.23
5.5.130.0030.04717.23
5.5.120.0050.04117.20
5.5.110.0070.04217.21
5.5.100.0080.04317.14
5.5.90.0070.04017.21
5.5.80.0020.04517.27
5.5.70.0060.04317.23
5.5.60.0110.03817.14
5.5.50.0070.04317.27
5.5.40.0030.04417.21
5.5.30.0090.04417.02
5.5.20.0030.04416.92
5.5.10.0030.03616.89
5.5.00.0000.04717.00
5.4.450.0070.03715.09
5.4.440.0030.04515.06
5.4.430.0050.03715.17
5.4.420.0030.04715.19
5.4.410.0020.04515.19
5.4.400.0020.03714.95
5.4.390.0030.04314.90
5.4.380.0030.04115.15
5.4.370.0020.03614.89
5.4.360.0030.03115.03
5.4.350.0060.03214.97
5.4.340.0060.03515.00
5.4.330.0070.00311.07
5.4.320.0110.03614.84
5.4.310.0030.03314.78
5.4.300.0060.02014.97
5.4.290.0110.03715.09
5.4.280.0080.03314.98
5.4.270.0060.03815.04
5.4.260.0050.04014.82
5.4.250.0030.03915.03
5.4.240.0030.03015.05
5.4.230.0080.03814.95
5.4.220.0050.03514.98
5.4.210.0020.04014.97
5.4.200.0030.03015.08
5.4.190.0020.04014.80
5.4.180.0080.02515.21
5.4.170.0000.04714.85
5.4.160.0010.03114.68
5.4.150.0030.02214.87
5.4.140.0050.03413.59
5.4.130.0000.02413.52
5.4.120.0030.02013.49
5.4.110.0030.02013.55
5.4.100.0020.02013.47
5.4.90.0020.03013.49
5.4.80.0050.02013.46
5.4.70.0030.02013.66
5.4.60.0020.02013.47
5.4.50.0030.02013.73
5.4.40.0030.03013.55
5.4.30.0020.02513.53
5.4.20.0030.01513.46
5.4.10.0070.01713.70
5.4.00.0010.01913.40
5.3.290.0040.03112.60
5.3.280.0020.04312.43
5.3.270.0070.03912.56
5.3.260.0050.03312.55
5.3.250.0080.01512.46
5.3.240.0030.02312.45
5.3.230.0050.01712.46
5.3.220.0000.02412.45
5.3.210.0030.02312.49
5.3.200.0020.02212.36
5.3.190.0030.02212.46
5.3.180.0020.02212.58
5.3.170.0000.02412.49
5.3.160.0020.02012.39
5.3.150.0000.02112.59
5.3.140.0050.02712.57
5.3.130.0030.02112.43
5.3.120.0000.02312.46
5.3.110.0020.02412.42
5.3.100.0010.01912.25
5.3.90.0020.02112.18
5.3.80.0020.01812.16
5.3.70.0010.03312.10
5.3.60.0020.04012.21
5.3.50.0030.02412.24
5.3.40.0070.03512.13
5.3.30.0030.02012.19
5.3.20.0030.01811.88
5.3.10.0020.03311.76
5.3.00.0050.02011.84
5.2.170.0030.06310.93
5.2.160.0000.06711.13
5.2.150.0030.03311.21
5.2.140.0000.03011.21
5.2.130.0030.02711.16
5.2.120.0000.03010.91
5.2.110.0030.04310.93
5.2.100.0000.03710.92
5.2.90.0030.02711.14
5.2.80.0000.03311.09
5.2.70.0070.02711.11
5.2.60.0000.03011.01
5.2.50.0070.02311.04
5.2.40.0070.02310.79
5.2.30.0000.03010.92
5.2.20.0000.03010.94
5.2.10.0030.02710.93
5.2.00.0000.03010.66
5.1.60.0030.02310.11
5.1.50.0000.02310.11
5.1.40.0070.03010.11
5.1.30.0000.02710.40
5.1.20.0000.02710.42
5.1.10.0070.02710.11
5.1.00.0000.04010.11
5.0.50.0030.01710.11
5.0.40.0000.02010.11
5.0.30.0000.03310.11
5.0.20.0000.03010.11
5.0.10.0000.01710.12
5.0.00.0000.02710.12
4.4.90.0000.02010.11
4.4.80.0000.01310.11
4.4.70.0000.02710.11
4.4.60.0000.01310.11
4.4.50.0000.01710.11
4.4.40.0000.02310.11
4.4.30.0000.01710.11
4.4.20.0030.02010.11
4.4.10.0030.01310.11
4.4.00.0000.02310.11
4.3.110.0000.01710.11
4.3.100.0000.01310.11
4.3.90.0030.02710.12
4.3.80.0000.02310.12
4.3.70.0000.01310.12
4.3.60.0000.01310.12
4.3.50.0030.03010.12
4.3.40.0000.02310.12
4.3.30.0000.01310.12
4.3.20.0030.02710.12
4.3.10.0030.01010.12
4.3.00.0000.01310.12

preferences:
51.98 ms | 400 KiB | 5 Q