3v4l.org

run code in 300+ PHP versions simultaneously
<?php $contact_rec = [ "bob" => ["email" => "bob@example.com"], "sara" => ["email" => "sara@example.com"] ]; $contact_rec[0]=""; //The emails of the client foreach($contact_rec as $key => $value) { if($value['email'] != null) $contact_rec[] = $value['email']; } foreach($contact_rec as $key => $value) { $contact_rec[$value] = $value; unset($contact_rec[$key]); } var_dump($contact_rec) ?>

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)
8.3.70.0070.01017.00
8.3.60.0070.00716.88
8.3.50.0210.00917.62
8.3.40.0140.00618.97
8.3.30.0070.00718.97
8.3.20.0070.01118.73
8.3.10.0060.00318.90
8.3.00.0040.00419.26
8.2.180.0110.00416.75
8.2.170.0060.00922.96
8.2.160.0060.00918.95
8.2.150.0090.00924.18
8.2.140.0030.00624.66
8.2.130.0070.00026.16
8.2.120.0020.00520.92
8.2.110.0040.00420.39
8.2.100.0070.00417.91
8.2.90.0090.00019.33
8.2.80.0040.00419.21
8.2.70.0040.00417.61
8.2.60.0040.00418.05
8.2.50.0000.00819.35
8.2.40.0040.00418.09
8.2.30.0050.00317.98
8.2.20.0030.00617.65
8.2.10.0070.00017.84
8.2.00.0030.00617.68
8.1.280.0180.00325.92
8.1.270.0000.00923.99
8.1.260.0110.00726.35
8.1.250.0090.00028.09
8.1.240.0030.00720.82
8.1.230.0060.00621.03
8.1.220.0000.00817.77
8.1.210.0090.00318.85
8.1.200.0030.00717.35
8.1.190.0060.00317.52
8.1.180.0090.00018.10
8.1.170.0000.00818.89
8.1.160.0070.00018.76
8.1.150.0000.00818.58
8.1.140.0000.00717.55
8.1.130.0070.00017.83
8.1.120.0030.00517.38
8.1.110.0000.00717.37
8.1.100.0030.00317.36
8.1.90.0000.00717.46
8.1.80.0020.00517.41
8.1.70.0020.00517.46
8.1.60.0020.00517.59
8.1.50.0040.00417.46
8.1.40.0000.00817.57
8.1.30.0000.00917.60
8.1.20.0070.00017.64
8.1.10.0030.00517.46
8.1.00.0050.00217.46
8.0.300.0000.00719.84
8.0.290.0070.00016.75
8.0.280.0070.00018.45
8.0.270.0030.00317.20
8.0.260.0040.00416.79
8.0.250.0070.00016.98
8.0.240.0000.00717.04
8.0.230.0030.00316.90
8.0.220.0000.00716.95
8.0.210.0040.00416.94
8.0.200.0070.00016.97
8.0.190.0040.00416.92
8.0.180.0030.00617.04
8.0.170.0000.00916.85
8.0.160.0000.00716.86
8.0.150.0040.00416.96
8.0.140.0000.00816.93
8.0.130.0030.00313.39
8.0.120.0060.00316.94
8.0.110.0020.00517.02
8.0.100.0040.00417.02
8.0.90.0040.00416.83
8.0.80.0030.01216.86
8.0.70.0040.00417.07
8.0.60.0000.00716.98
8.0.50.0040.00416.98
8.0.30.0080.00817.14
8.0.20.0080.01117.05
8.0.10.0040.00417.06
8.0.00.0080.01116.99
7.4.330.0000.00713.04
7.4.320.0030.00316.53
7.4.300.0040.00416.52
7.4.290.0040.00416.50
7.4.280.0030.00516.43
7.4.270.0000.00816.39
7.4.260.0000.00613.20
7.4.250.0060.00316.53
7.4.240.0000.00716.53
7.4.230.0070.00016.57
7.4.220.0150.00316.66
7.4.210.0070.01016.56
7.4.200.0070.00016.62
7.4.190.0000.00716.47
7.4.160.0130.01016.48
7.4.150.0080.01116.56
7.4.140.0070.01116.62
7.4.130.0030.01716.51
7.4.120.0140.00716.39
7.4.110.0070.01016.60
7.4.100.0100.00716.52
7.4.90.0110.00716.55
7.4.80.0030.01419.39
7.4.70.0100.00616.59
7.4.60.0030.01316.47
7.4.50.0030.00616.65
7.4.40.0090.00616.58
7.4.30.0030.01316.57
7.4.00.0060.00614.78
7.3.330.0070.00013.33
7.3.320.0070.00013.26
7.3.310.0030.00316.32
7.3.300.0040.00416.24
7.3.290.0070.00716.36
7.3.280.0080.01216.38
7.3.270.0140.00316.37
7.3.260.0090.00916.34
7.3.250.0070.01116.49
7.3.240.0070.01116.53
7.3.230.0110.00716.57
7.3.210.0120.00916.46
7.3.200.0140.00416.40
7.3.190.0150.00916.59
7.3.180.0060.00916.42
7.3.170.0040.01216.43
7.3.160.0160.00616.41
7.3.120.0000.01314.88
7.2.330.0040.01416.78
7.2.320.0090.00916.71
7.2.310.0040.01516.47
7.2.300.0100.00716.61
7.2.290.0050.01416.62
7.1.200.0000.01115.83
7.1.70.0030.00617.14
7.1.60.0100.01419.30
7.1.50.0040.02117.07
7.1.00.0100.06322.54
7.0.200.0120.00016.76
7.0.140.0070.06321.92
7.0.120.0030.07322.15
7.0.60.0100.04320.01
7.0.50.0100.08717.86
7.0.40.0000.06320.23
7.0.30.0330.04320.18
7.0.20.0300.08020.09
7.0.10.0130.08020.09
7.0.00.0100.07720.12
5.6.280.0130.06321.02
5.6.210.0070.05720.71
5.6.200.0130.07018.17
5.6.190.0130.07320.64
5.6.180.3770.03720.39
5.6.170.0270.07720.45
5.6.160.0000.04320.42
5.6.150.0030.04718.14
5.6.140.0000.04318.11
5.6.130.0070.07318.11
5.6.120.0070.06321.04
5.6.110.0070.08720.89
5.6.100.0000.07021.04
5.6.90.0170.07721.10
5.6.80.0000.08020.33
5.6.70.0100.05320.36
5.5.350.0000.08320.47
5.5.340.0030.04317.95
5.5.330.0100.04720.36
5.5.320.0170.04320.51
5.5.310.0370.07720.34
5.5.300.0030.04317.92
5.5.290.0000.04318.01
5.5.280.0200.06720.84
5.5.270.0030.04320.88
5.5.260.0070.08020.72
5.5.250.0100.05020.68
5.5.240.0400.06020.25
5.4.450.0270.07019.51
5.4.440.0030.08319.32
5.4.430.0030.04319.35
5.4.420.0100.03319.45
5.4.410.0030.08019.01
5.4.400.0070.04719.08
5.4.390.0030.07318.80
5.4.380.0100.07019.18
5.4.370.0130.06019.18
5.4.360.0100.07319.14
5.4.350.0130.06718.81
5.4.340.0100.07319.05
5.4.320.0070.05019.00
5.4.310.0100.06718.91
5.4.300.0030.06318.79
5.4.290.0030.05019.16
5.4.280.0030.05319.07
5.4.270.0070.07719.13
5.4.260.0070.07719.17
5.4.250.0070.07318.91
5.4.240.0100.06018.91
5.4.230.0000.07718.93
5.4.220.0070.05019.07
5.4.210.0070.07719.13
5.4.200.0030.04018.80
5.4.190.0030.04719.17
5.4.180.0000.04319.07
5.4.170.0070.03318.90
5.4.160.0030.04019.06
5.4.150.0070.03318.89
5.4.140.0030.04016.48
5.4.130.0030.03716.24
5.4.120.0000.03716.26
5.4.110.0030.03316.37
5.4.100.0030.03716.24
5.4.90.0000.04016.28
5.4.80.0030.04016.27
5.4.70.0000.03716.22
5.4.60.0100.02716.26
5.4.50.0030.03316.36
5.4.40.0030.03316.27
5.4.30.0000.04316.34
5.4.20.0070.03016.27
5.4.10.0100.03016.21
5.4.00.0000.03715.73
5.3.290.0100.07314.59
5.3.280.0100.07314.54
5.3.270.0070.03314.55
5.3.260.0070.03314.62
5.3.250.0030.04014.48
5.3.240.0030.04314.39
5.3.230.0070.03314.68
5.3.220.0000.04014.49
5.3.210.0000.04014.45
5.3.200.0030.03714.54
5.3.190.0100.03014.53
5.3.180.0070.03714.35
5.3.170.0030.03714.66
5.3.160.0070.03314.53
5.3.150.0130.04014.46
5.3.140.0130.02714.48
5.3.130.0070.03314.49
5.3.120.0000.04014.48
5.3.110.0130.02714.64
5.3.100.0000.04713.96
5.3.90.0100.03714.00
5.3.80.0030.03313.93
5.3.70.0030.03713.80
5.3.60.0030.03313.94
5.3.50.0030.04313.78
5.3.40.0000.03713.78
5.3.30.0030.03313.73
5.3.20.0000.03713.62
5.3.10.0030.03313.62
5.3.00.0030.03713.57
5.2.170.0000.03311.00
5.2.160.0000.03011.15
5.2.150.0030.02711.03
5.2.140.0030.02710.96
5.2.130.0070.02311.04
5.2.120.0000.03311.03
5.2.110.0000.03011.09
5.2.100.0030.02711.09
5.2.90.0000.03011.00
5.2.80.0070.02310.97
5.2.70.0000.03011.04
5.2.60.0000.03011.12
5.2.50.0000.03011.17
5.2.40.0000.03010.86
5.2.30.0030.02710.97
5.2.20.0030.03010.86
5.2.10.0030.06010.71
5.2.00.0000.05710.70
5.1.60.0000.05710.14
5.1.50.0100.0479.96
5.1.40.0100.0509.99
5.1.30.0000.04710.43
5.1.20.0000.05310.43
5.1.10.0100.05010.08
5.1.00.0070.04310.04
5.0.50.0000.0308.56
5.0.40.0030.0238.31
5.0.30.0030.0408.23
5.0.20.0070.0338.26
5.0.10.0100.0408.13
5.0.00.0000.0608.21
4.4.90.0000.0177.84
4.4.80.0030.0137.84
4.4.70.0000.0177.84
4.4.60.0000.0237.84
4.4.50.0030.0337.84
4.4.40.0000.0577.84
4.4.30.0070.0307.84
4.4.20.0070.0307.84
4.4.10.0000.0237.84
4.4.00.0000.0477.84
4.3.110.0000.0377.84
4.3.100.0030.0377.84
4.3.90.0030.0307.84
4.3.80.0030.0507.84
4.3.70.0030.0307.84
4.3.60.0100.0177.84
4.3.50.0100.0237.84
4.3.40.0000.0507.84
4.3.30.0000.0207.84
4.3.20.0030.0337.84
4.3.10.0000.0377.84
4.3.00.0030.0307.84

preferences:
63.11 ms | 401 KiB | 5 Q