3v4l.org

run code in 300+ PHP versions simultaneously
<?php $num = 2; $array = array(1,2,3,4,5,6,7); foreach($array as $key) { if($key === $num) var_dump(key(prev($array))); break; }

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)
8.3.60.0030.01718.43
8.3.50.0170.00321.16
8.3.40.0090.00618.67
8.3.30.0000.01419.04
8.3.20.0040.00420.20
8.3.10.0080.00023.48
8.3.00.0080.00019.13
8.2.180.0090.00616.38
8.2.170.0140.00022.96
8.2.160.0130.00320.25
8.2.150.0090.00024.18
8.2.140.0050.00224.66
8.2.130.0040.00426.16
8.2.120.0040.00421.10
8.2.110.0080.00322.25
8.2.100.0040.00817.50
8.2.90.0040.00419.05
8.2.80.0000.00817.97
8.2.70.0040.00417.50
8.2.60.0040.00417.92
8.2.50.0060.00318.07
8.2.40.0030.00619.95
8.2.30.0040.00417.99
8.2.20.0040.00417.67
8.2.10.0040.00418.06
8.2.00.0070.00017.59
8.1.280.0090.00925.92
8.1.270.0080.00023.96
8.1.260.0090.00026.35
8.1.250.0060.00328.09
8.1.240.0080.00023.89
8.1.230.0000.01219.13
8.1.220.0050.00217.79
8.1.210.0000.00818.77
8.1.200.0060.00317.13
8.1.190.0000.00917.10
8.1.180.0030.00518.10
8.1.170.0000.00818.38
8.1.160.0000.00721.89
8.1.150.0040.00418.85
8.1.140.0040.00417.45
8.1.130.0030.00317.86
8.1.120.0030.00317.46
8.1.110.0040.00417.44
8.1.100.0040.00417.35
8.1.90.0050.00317.31
8.1.80.0040.00417.34
8.1.70.0030.00317.45
8.1.60.0080.00017.55
8.1.50.0040.00417.52
8.1.40.0000.00817.50
8.1.30.0060.00317.64
8.1.20.0030.00517.55
8.1.10.0030.00517.38
8.1.00.0040.00417.42
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0030.00318.31
8.0.270.0030.00317.18
8.0.260.0020.00517.16
8.0.250.0070.00016.98
8.0.240.0080.00016.96
8.0.230.0000.00716.91
8.0.220.0060.00016.92
8.0.210.0050.00316.83
8.0.200.0060.00016.82
8.0.190.0040.00416.87
8.0.180.0000.00716.91
8.0.170.0030.00616.80
8.0.160.0000.00916.86
8.0.150.0060.00316.85
8.0.140.0040.00316.75
8.0.130.0030.00313.41
8.0.120.0000.00816.91
8.0.110.0040.00416.91
8.0.100.0000.00716.93
8.0.90.0000.00716.84
8.0.80.0090.00616.77
8.0.70.0030.00516.75
8.0.60.0000.00816.79
8.0.50.0080.00016.72
8.0.30.0150.00317.03
8.0.20.0090.01017.40
8.0.10.0040.00416.90
8.0.00.0070.01016.82
7.4.330.0020.00215.14
7.4.320.0030.00316.43
7.4.300.0030.00316.49
7.4.290.0040.00416.52
7.4.280.0040.00416.46
7.4.270.0000.00716.61
7.4.260.0000.00716.48
7.4.250.0040.00416.40
7.4.240.0030.00316.58
7.4.230.0070.00016.41
7.4.220.0000.01716.42
7.4.210.0080.01216.66
7.4.200.0030.00316.41
7.4.160.0150.00616.59
7.4.150.0060.01217.40
7.4.140.0110.00617.86
7.4.130.0080.00816.39
7.4.120.0120.00516.49
7.4.110.0070.01416.54
7.4.100.0150.00316.52
7.4.90.0090.00916.49
7.4.80.0030.01419.39
7.4.70.0030.01316.38
7.4.60.0090.00616.52
7.4.50.0040.00416.41
7.4.40.0120.00616.50
7.4.30.0070.00916.49
7.4.00.0070.00414.82
7.3.330.0030.00313.09
7.3.320.0050.00013.13
7.3.310.0070.00016.30
7.3.300.0000.00616.35
7.3.290.0070.00716.36
7.3.280.0080.01016.35
7.3.270.0200.00317.40
7.3.260.0060.00916.36
7.3.250.0130.00516.29
7.3.240.0070.01116.27
7.3.230.0060.00916.39
7.3.210.0100.00716.33
7.3.200.0160.00619.39
7.3.190.0130.00316.17
7.3.180.0070.01016.45
7.3.170.0130.00416.34
7.3.160.0060.01216.50
7.2.330.0060.01616.63
7.2.320.0030.01316.42
7.2.310.0110.00716.63
7.2.300.0000.01516.78
7.2.290.0090.01216.52
7.2.60.0030.01316.82
7.1.200.0100.00315.77
7.1.70.0000.00816.88
7.1.60.0120.01219.32
7.1.50.0090.01216.71
7.1.00.0170.06322.39
7.0.200.0000.00716.46
7.0.140.0070.06722.10
7.0.60.0030.08019.99
7.0.50.0070.06017.66
7.0.40.0170.07720.05
7.0.30.0270.04320.02
7.0.20.0300.07720.01
7.0.10.0300.07720.11
7.0.00.0030.09020.01
5.6.280.0000.07320.82
5.6.210.0070.05720.66
5.6.200.0070.04718.19
5.6.190.0100.07720.32
5.6.180.0270.07320.41
5.6.170.0300.07320.40
5.6.160.0100.08020.32
5.6.150.0070.08018.09
5.6.140.0130.03018.15
5.6.130.0070.06718.11
5.6.120.0130.07021.12
5.6.110.0200.08020.98
5.6.100.0030.09020.99
5.6.90.0200.07720.96
5.6.80.0070.08020.40
5.6.70.1970.04020.49
5.5.350.0170.07720.40
5.5.340.0030.08317.95
5.5.330.0070.08720.25
5.5.320.0330.08320.20
5.5.310.0230.05720.14
5.5.300.0000.06017.93
5.5.290.0030.08317.96
5.5.280.0000.08720.93
5.5.270.0030.04320.80
5.5.260.0070.04020.64
5.5.250.0270.07020.61
5.5.240.0270.05320.35
5.4.450.0130.06319.49
5.4.440.0770.05319.21
5.4.430.0770.06019.37
5.4.420.0670.00019.52
5.4.410.0630.00019.32
5.4.400.0630.00019.19
5.4.390.0600.00019.26
5.4.380.0670.00019.26
5.4.370.0670.00018.98
5.4.360.0800.00019.05
5.4.350.0630.00019.13
5.4.340.0050.04411.97
5.4.320.0060.03812.46
5.4.310.0030.05112.45
5.4.300.0070.03512.45
5.4.290.0070.03812.45
5.4.280.0070.03412.35
5.4.270.0050.03712.35
5.4.260.0090.03512.35
5.4.250.0080.04912.35
5.4.240.0110.03912.35
5.4.230.0060.04112.34
5.4.220.0060.04012.34
5.4.210.0070.04112.34
5.4.200.0080.03812.34
5.4.190.0050.03912.34
5.4.180.0020.04112.34
5.4.170.0060.03912.35
5.4.160.0070.03612.35
5.4.150.0060.03712.34
5.4.140.0050.03912.02
5.4.130.0070.03512.01
5.4.120.0060.03511.97
5.4.110.0030.03811.97
5.4.100.0060.04011.97
5.4.90.0060.03711.97
5.4.80.0130.03111.96
5.4.70.0060.03411.96
5.4.60.0050.03511.96
5.4.50.0100.03211.96
5.4.40.0080.04111.95
5.4.30.0090.03911.95
5.4.20.0050.04011.95
5.4.10.0140.06411.95
5.4.00.0090.04211.44
5.3.290.0050.04712.80
5.3.280.0090.03812.71
5.3.270.0060.04112.73
5.3.260.0060.04212.72
5.3.250.0080.04212.72
5.3.240.0100.03812.71
5.3.230.0060.04912.71
5.3.220.0070.03712.68
5.3.210.0050.05312.68
5.3.200.0050.03712.68
5.3.190.0060.04012.67
5.3.180.0080.04112.68
5.3.170.0080.03712.67
5.3.160.0050.04212.68
5.3.150.0060.04212.68
5.3.140.0090.03512.66
5.3.130.0120.03712.66
5.3.120.0060.04812.66
5.3.110.0110.06312.66
5.3.100.0380.11612.12
5.3.90.0070.05212.08
5.3.80.0130.04412.07
5.3.70.0080.04912.08
5.3.60.0060.04412.06
5.3.50.0030.04012.00
5.3.40.0120.05712.00
5.3.30.0100.07011.94
5.3.20.0090.03411.72
5.3.10.0060.03611.69
5.3.00.0050.03811.68
5.2.170.0050.0309.18
5.2.160.0010.0359.17
5.2.150.0070.0339.18
5.2.140.0030.0379.17
5.2.130.0040.0309.13
5.2.120.0040.0309.13
5.2.110.0050.0309.14
5.2.100.0070.0339.13
5.2.90.0030.0369.14
5.2.80.0030.0339.14
5.2.70.0060.0339.13
5.2.60.0080.0279.09
5.2.50.0040.0319.06
5.2.40.0030.0329.04
5.2.30.0230.0819.01
5.2.20.0040.0329.00
5.2.10.0050.0298.92
5.2.00.0070.0318.78
5.1.60.0050.0268.06
5.1.50.0060.0248.06
5.1.40.0040.0298.04
5.1.30.0040.0288.39
5.1.20.0020.0298.41
5.1.10.0030.0288.13
5.1.00.0070.0238.13
5.0.50.0020.0226.62
5.0.40.0020.0216.47
5.0.30.0080.0326.29
5.0.20.0050.0196.26
5.0.10.0020.0226.23
5.0.00.0030.0326.23
4.4.90.0020.0164.78
4.4.80.0030.0154.76
4.4.70.0020.0174.75
4.4.60.0030.0204.76
4.4.50.0060.0184.77
4.4.40.0030.0274.71
4.4.30.0050.0144.76
4.4.20.0040.0164.84
4.4.10.0020.0164.85
4.4.00.0030.0254.76
4.3.110.0030.0154.67
4.3.100.0040.0134.66
4.3.90.0020.0154.63
4.3.80.0020.0254.58
4.3.70.0010.0184.63
4.3.60.0030.0144.63
4.3.50.0040.0194.63
4.3.40.0010.0264.54
4.3.30.0010.0173.28
4.3.20.0030.0153.26
4.3.10.0010.0173.22
4.3.00.0100.0207.19

preferences:
43.8 ms | 401 KiB | 5 Q