3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3); $b = &$a; foreach($a as $key => $v) { echo "$v\n"; if ($key === 1) { unset($a[$key]); } }

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)
8.3.60.0170.00016.63
8.3.50.0100.00821.94
8.3.40.0100.00719.02
8.3.30.0110.00718.63
8.3.20.0000.00820.35
8.3.10.0060.00323.46
8.3.00.0000.00819.25
8.2.180.0120.00618.14
8.2.170.0070.00722.96
8.2.160.0100.00720.38
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0090.00017.75
8.2.120.0000.00826.35
8.2.110.0030.00622.11
8.2.100.0040.00817.84
8.2.90.0050.00318.80
8.2.80.0090.00318.04
8.2.70.0040.00418.03
8.2.60.0000.00718.05
8.2.50.0000.00918.10
8.2.40.0040.00420.57
8.2.30.0040.00420.50
8.2.20.0000.00817.61
8.2.10.0040.00418.03
8.2.00.0000.00718.04
8.1.280.0070.00725.92
8.1.270.0040.00422.23
8.1.260.0050.00328.09
8.1.250.0030.00628.09
8.1.240.0050.00323.96
8.1.230.0060.00620.75
8.1.220.0000.00917.74
8.1.210.0040.00418.77
8.1.200.0060.00317.25
8.1.190.0000.00917.23
8.1.180.0030.00618.10
8.1.170.0070.00318.67
8.1.160.0000.00722.00
8.1.150.0050.00218.89
8.1.140.0000.00819.44
8.1.130.0030.00317.63
8.1.120.0070.00017.34
8.1.110.0070.00317.48
8.1.100.0060.00317.42
8.1.90.0050.00317.46
8.1.80.0040.00417.40
8.1.70.0000.00717.42
8.1.60.0030.00617.57
8.1.50.0040.00417.57
8.1.40.0000.00917.39
8.1.30.0080.00017.55
8.1.20.0040.00417.64
8.1.10.0000.00717.38
8.1.00.0000.00817.32
8.0.300.0070.00019.62
8.0.290.0040.00416.71
8.0.280.0000.00718.48
8.0.270.0070.00017.23
8.0.260.0070.00017.18
8.0.250.0040.00416.91
8.0.240.0030.00316.84
8.0.230.0070.00016.87
8.0.220.0030.00316.86
8.0.210.0030.00316.77
8.0.200.0000.00716.86
8.0.190.0050.00316.83
8.0.180.0040.00416.94
8.0.170.0040.00416.95
8.0.160.0030.00316.98
8.0.150.0000.00716.81
8.0.140.0040.00316.73
8.0.130.0030.00313.29
8.0.120.0080.00016.88
8.0.110.0040.00416.78
8.0.100.0000.00816.71
8.0.90.0070.00016.70
8.0.80.0090.00616.86
8.0.70.0040.00416.99
8.0.60.0080.00016.70
8.0.50.0080.00016.95
8.0.30.0110.00816.95
8.0.20.0080.01117.40
8.0.10.0070.00016.97
8.0.00.0080.01016.71
7.4.330.0050.00016.67
7.4.320.0070.00016.42
7.4.300.0030.00316.43
7.4.290.0030.00316.56
7.4.280.0000.00816.57
7.4.270.0040.00416.61
7.4.260.0030.00316.46
7.4.250.0050.00516.50
7.4.240.0040.00416.61
7.4.230.0000.00716.35
7.4.220.0030.02016.70
7.4.210.0060.00916.69
7.4.200.0070.00016.68
7.4.160.0060.00916.40
7.4.150.0090.01517.40
7.4.140.0090.00817.86
7.4.130.0120.00516.43
7.4.120.0120.00916.39
7.4.110.0140.01116.53
7.4.100.0110.00616.48
7.4.90.0060.01016.40
7.4.80.0070.00919.39
7.4.70.0070.01016.70
7.4.60.0040.01216.39
7.4.50.0040.01116.46
7.4.40.0110.00716.57
7.4.30.0040.01316.41
7.4.10.0030.01514.82
7.4.00.0040.01315.06
7.3.330.0000.00513.06
7.3.320.0000.00513.05
7.3.310.0040.00416.14
7.3.300.0000.00616.30
7.3.290.0100.00516.35
7.3.280.0080.00816.35
7.3.270.0130.00917.40
7.3.260.0120.01216.54
7.3.250.0140.00816.49
7.3.240.0100.00816.44
7.3.230.0150.00316.39
7.3.210.0060.01216.52
7.3.200.0090.00916.68
7.3.190.0270.02016.55
7.3.180.0120.00616.38
7.3.170.0120.00616.39
7.3.160.0050.01116.54
7.3.130.0000.01814.82
7.3.120.0030.01514.74
7.3.110.0070.01014.50
7.3.100.0000.01515.02
7.3.90.0070.00714.83
7.3.80.0000.01415.00
7.3.70.0040.00814.93
7.3.60.0050.00515.00
7.3.50.0090.00314.67
7.3.40.0070.00714.78
7.3.30.0070.00714.81
7.3.20.0000.01116.79
7.3.10.0100.00516.65
7.3.00.0060.00916.44
7.2.330.0160.00616.80
7.2.320.0120.00616.45
7.2.310.0120.00416.56
7.2.300.0030.01416.66
7.2.290.0210.00016.36
7.2.260.0040.01414.66
7.2.250.0100.01015.13
7.2.240.0060.00915.17
7.2.230.0000.01015.23
7.2.220.0110.00714.72
7.2.210.0060.00615.02
7.2.200.0040.01115.12
7.2.190.0030.01014.75
7.2.180.0080.00315.07
7.2.170.0030.01315.04
7.2.160.0070.01014.98
7.2.150.0100.00316.83
7.2.140.0030.01016.68
7.2.130.0090.00916.65
7.2.120.0110.00716.84
7.2.110.0080.00716.80
7.2.100.0100.00816.75
7.2.90.0070.00716.87
7.2.80.0090.00616.79
7.2.70.0100.00516.74
7.2.60.0070.00816.85
7.2.50.0090.01016.71
7.2.40.0050.00816.71
7.2.30.0100.00616.75
7.2.20.0070.00816.71
7.2.10.0110.00516.71
7.2.00.0040.01117.33
7.1.330.0030.01215.72
7.1.320.0120.00315.75
7.1.310.0110.00415.64
7.1.300.0040.00815.88
7.1.290.0070.00715.51
7.1.280.0030.01015.89
7.1.270.0090.00015.52
7.1.260.0040.01115.77
7.1.250.0070.01015.61
7.1.240.0070.00915.85
7.1.230.0070.00615.71
7.1.220.0040.00815.61
7.1.210.0080.01115.54
7.1.200.0110.00715.66
7.1.190.0030.00615.68
7.1.180.0030.01015.58
7.1.170.0030.00815.80
7.1.160.0080.00215.71
7.1.150.0050.00815.70
7.1.140.0040.00515.85
7.1.130.0050.00915.80
7.1.120.0050.00815.73
7.1.110.0080.00515.93
7.1.100.0070.00416.45
7.1.90.0080.00815.76
7.1.80.0030.00915.86
7.1.70.0050.00616.11
7.1.60.0080.01016.89
7.1.50.0130.00722.03
7.1.40.0050.00915.74
7.1.30.0050.00615.66
7.1.20.0130.00215.73
7.1.10.0050.00615.72
7.1.00.0020.03218.01
7.0.330.0050.00915.16
7.0.320.0050.00715.45
7.0.310.0090.00515.52
7.0.300.0030.00915.33
7.0.290.0030.00915.42
7.0.280.0090.00715.24
7.0.270.0030.00815.48
7.0.260.0060.00515.51
7.0.250.0050.00815.46
7.0.240.0050.01215.19
7.0.230.0050.01115.31
7.0.220.0110.00315.32
7.0.210.0040.00615.42
7.0.200.0080.00215.90
7.0.190.0070.00715.49
7.0.180.0030.01215.34
7.0.170.0050.00715.53
7.0.160.0070.00415.43
7.0.150.0030.00715.24
7.0.140.0080.00315.21
7.0.130.0040.00815.24
7.0.120.0040.00915.38
7.0.110.0070.00715.39
7.0.100.0000.00915.25
7.0.90.0020.01215.30
7.0.80.0070.00515.35
7.0.70.0020.01215.33
7.0.60.0070.03116.76
7.0.50.0030.01916.23
7.0.40.0100.02315.59
7.0.30.0200.03015.70
7.0.20.0150.01815.63
7.0.10.0080.02515.63
7.0.00.0070.01915.61
5.6.400.0000.01214.61
5.6.390.0000.01614.32
5.6.380.0070.00814.23
5.6.370.0050.00714.35
5.6.360.0120.00314.41
5.6.350.0020.01314.36
5.6.340.0080.00714.20
5.6.330.0030.01214.30
5.6.320.0070.00814.18
5.6.310.0100.00614.35
5.6.300.0080.00914.24
5.6.290.0060.00714.28
5.6.280.0060.02516.42
5.6.270.0050.00814.40
5.6.260.0050.00614.25
5.6.250.0050.00714.21
5.6.240.0030.01214.39
5.6.230.0110.00214.22
5.6.220.0060.00514.11
5.6.210.0060.02116.36
5.6.200.0100.01615.52
5.6.190.0030.03616.42
5.6.180.0160.02716.38
5.6.170.0160.02716.27
5.6.160.0040.03516.25
5.6.150.0060.02115.55
5.6.140.0040.02115.52
5.6.130.0080.01515.58
5.6.120.0110.01816.53
5.6.110.0100.03016.52
5.6.100.0030.02716.42
5.6.90.0070.03016.59
5.6.80.0060.02316.27
5.6.70.0070.00614.24
5.6.60.0030.00914.23
5.6.50.0060.00514.04
5.6.40.0080.00314.29
5.6.30.0070.00514.46
5.6.20.0070.00814.22
5.6.10.0050.01014.33
5.6.00.0050.00914.02
5.5.380.0080.00612.36
5.5.370.0060.00612.65
5.5.360.0080.00512.33
5.5.350.0130.02615.11
5.5.340.0100.02514.45
5.5.330.0050.03315.17
5.5.320.0040.01715.23
5.5.310.0090.01915.23
5.5.300.0100.02614.42
5.5.290.0060.03114.20
5.5.280.0020.02815.29
5.5.270.0060.01515.16
5.5.260.0090.02715.26
5.5.250.0070.01715.15
5.5.240.1450.01515.01
5.5.230.0040.00412.49
5.5.220.0080.00412.59
5.5.210.0080.00312.67
5.5.200.0080.00012.66
5.5.190.0050.00912.59
5.5.180.0030.01112.69
5.5.170.0090.00312.63
5.5.160.0070.00512.45
5.5.150.0070.00512.28
5.5.140.0050.00412.46
5.5.130.0050.00512.36
5.5.120.0070.00512.43
5.5.110.0090.00412.46
5.5.100.0060.00312.50
5.5.90.0030.00912.41
5.5.80.0050.00712.70
5.5.70.0070.00512.64
5.5.60.0050.00512.36
5.5.50.0030.00912.41
5.5.40.0030.00512.54
5.5.30.0060.00412.37
5.5.20.0050.00612.44
5.5.10.0030.00712.53
5.5.00.0070.00412.51

preferences:
57.51 ms | 401 KiB | 5 Q