3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "2014-12-01"; $b = "2015-01-01"; $i = date("Y-m", strtotime($a)); while($i <= date("Y-m", strtotime($b))){ echo $i."\n"; if(substr($i, 5, 2) == "12") $i = (date("Y", strtotime($i."01")) + 1)."-01"; else $i++; }

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)
8.3.60.0130.01016.88
8.3.50.0120.00922.09
8.3.40.0110.00719.09
8.3.30.0120.00419.23
8.3.20.0030.00720.38
8.3.10.0060.00321.81
8.3.00.0060.00320.95
8.2.180.0150.02218.41
8.2.170.0230.01722.96
8.2.160.0160.02222.25
8.2.150.0110.00724.18
8.2.140.0070.01724.66
8.2.130.0090.01226.16
8.2.120.0070.01418.91
8.2.110.0070.01422.24
8.2.100.0120.01618.28
8.2.90.0060.01619.18
8.2.80.0000.02517.97
8.2.70.0130.01317.71
8.2.60.0140.01417.93
8.2.50.0090.01218.07
8.2.40.0100.01320.07
8.2.30.0120.01218.33
8.2.20.0070.01318.01
8.2.10.0030.01718.33
8.2.00.0100.01618.06
8.1.280.0100.02425.92
8.1.270.0070.01120.83
8.1.260.0050.01426.35
8.1.250.0190.00628.09
8.1.240.0080.01517.96
8.1.230.0100.01719.10
8.1.220.0090.01217.79
8.1.210.0140.01118.77
8.1.200.0070.01617.36
8.1.190.0000.02217.48
8.1.180.0060.01618.10
8.1.170.0110.01418.78
8.1.160.0040.01522.16
8.1.150.0060.02319.04
8.1.140.0030.01719.36
8.1.130.0060.01317.94
8.1.120.0070.01417.65
8.1.110.0070.01417.62
8.1.100.0070.01317.77
8.1.90.0070.01417.71
8.1.80.0090.01617.70
8.1.70.0160.01017.70
8.1.60.0090.01917.69
8.1.50.0040.02217.74
8.1.40.0070.01617.71
8.1.30.0100.01317.73
8.1.20.0100.01317.80
8.1.10.0030.01817.73
8.1.00.0060.01617.65
8.0.300.0040.01418.77
8.0.290.0030.01616.88
8.0.280.0060.01318.42
8.0.270.0090.01217.30
8.0.260.0070.01317.21
8.0.250.0100.01317.22
8.0.240.0070.01517.09
8.0.230.0130.00617.18
8.0.220.0130.01017.01
8.0.210.0070.01317.04
8.0.200.0100.01017.17
8.0.190.0060.01317.24
8.0.180.0090.01517.02
8.0.170.0040.01817.11
8.0.160.0070.02017.01
8.0.150.0100.01017.01
8.0.140.0040.01517.06
8.0.130.0030.01313.60
8.0.120.0040.01816.98
8.0.110.0070.01517.05
8.0.100.0110.01517.10
8.0.90.0070.01317.06
8.0.80.0170.03717.05
8.0.70.0060.01317.09
8.0.60.0070.01117.09
8.0.50.0090.01216.94
8.0.30.0230.05917.26
8.0.20.0280.05117.40
8.0.10.0150.00617.04
8.0.00.0510.03416.93
7.4.330.0120.00615.20
7.4.320.0070.01116.54
7.4.300.0030.01716.53
7.4.290.0110.01116.61
7.4.280.0090.01516.53
7.4.270.0100.01416.59
7.4.260.0180.00716.52
7.4.250.0120.01616.55
7.4.240.0060.01416.55
7.4.230.0150.00716.66
7.4.220.0230.03616.58
7.4.210.0070.04016.66
7.4.200.0030.01616.73
7.4.160.0260.02616.65
7.4.150.0210.06617.40
7.4.140.0330.04417.86
7.4.130.0200.05716.61
7.4.120.0290.03716.62
7.4.110.0490.07116.44
7.4.100.0240.04216.40
7.4.90.0300.04016.75
7.4.80.0430.02719.39
7.4.70.0320.04116.54
7.4.60.0100.04016.59
7.4.50.0060.01916.75
7.4.40.0340.03716.52
7.4.30.0230.03916.65
7.4.00.0100.02414.71
7.3.330.0060.01413.25
7.3.320.0550.05613.26
7.3.310.0040.01516.23
7.3.300.0130.00716.34
7.3.290.0180.04616.39
7.3.280.0140.04916.28
7.3.270.0640.05617.40
7.3.260.0200.05416.43
7.3.250.0340.06216.51
7.3.240.0350.04816.42
7.3.230.0380.05116.40
7.3.210.0350.03216.50
7.3.200.0420.06419.39
7.3.190.0150.04116.63
7.3.180.0260.03316.60
7.3.170.0250.04816.70
7.3.160.0190.02916.70
7.2.330.0260.04417.02
7.2.320.0390.03316.71
7.2.310.0070.04416.88
7.2.300.0190.04816.47
7.2.290.0340.03716.88
7.2.00.0140.01419.57
7.1.200.0070.01515.98
7.1.100.0140.01718.50
7.1.70.0070.02417.39
7.1.60.0040.02119.46
7.1.50.0190.02917.40
7.1.00.0070.10022.19
7.0.200.0150.01916.50
7.0.140.0130.05022.07
7.0.100.0130.10020.05
7.0.90.0200.08320.04
7.0.80.0100.09019.93
7.0.70.0200.09320.00
7.0.60.0270.07719.88
7.0.50.0130.09720.23
7.0.40.0070.10720.10
7.0.30.0030.10720.17
7.0.20.0200.09720.11
7.0.10.0130.09019.99
7.0.00.0030.08720.14
5.6.280.0170.11321.12
5.6.250.0170.09020.73
5.6.240.0130.10720.72
5.6.230.0270.09020.67
5.6.220.0270.08720.67
5.6.210.0170.07020.65
5.6.200.0200.09021.04
5.6.190.0200.08321.04
5.6.180.0270.08721.17
5.6.170.0200.08321.07
5.6.160.0200.06720.98
5.6.150.0200.08321.08
5.6.140.0130.07320.95
5.6.130.0170.10021.00
5.6.120.0130.10021.13
5.6.110.0270.07720.95
5.6.100.0100.11320.93
5.6.90.0170.07321.06
5.6.80.0100.07020.40
5.6.70.0270.08720.41
5.6.60.0230.09320.44
5.6.50.0200.07720.46
5.6.40.0100.10720.46
5.6.30.0130.08320.31
5.6.20.0200.07320.37
5.6.10.0130.05720.43
5.6.00.0200.09720.29
5.5.380.0200.09720.35
5.5.370.0170.10320.43
5.5.360.0170.05720.38
5.5.350.0100.08720.42
5.5.340.0170.10020.92
5.5.330.0130.12020.89
5.5.320.0200.08020.77
5.5.310.0230.04720.77
5.5.300.0270.08720.79
5.5.290.0070.12720.89
5.5.280.0170.09320.82
5.5.270.0130.09020.86
5.5.260.0130.09020.89
5.5.250.0200.09720.64
5.5.240.0100.06020.15
5.5.230.0130.10020.18
5.5.220.0170.05720.10
5.5.210.0270.09720.30
5.5.200.0130.08320.25
5.5.190.0130.09720.11
5.5.180.0130.07020.23
5.5.160.0100.10320.25
5.5.150.0130.07320.18
5.5.140.0270.07020.14
5.5.130.0100.10020.18
5.5.120.0170.06020.21
5.5.110.0270.09020.10
5.5.100.0230.08320.01
5.5.90.0100.06020.09
5.5.80.0030.06320.16
5.5.70.0100.08020.00
5.5.60.0100.08020.11
5.5.50.0230.05319.91
5.5.40.0130.06020.14
5.5.30.0270.08720.14
5.5.20.0230.06019.98
5.5.10.0200.09720.03
5.5.00.0100.09320.02
5.4.450.0070.06019.31
5.4.440.0200.09719.21
5.4.430.0270.08719.29
5.4.420.0130.09019.14
5.4.410.0270.08019.20
5.4.400.0170.09318.98
5.4.390.0100.05318.99
5.4.380.0130.08718.89
5.4.370.0170.05718.75
5.4.360.0130.09718.75
5.4.350.0200.09318.89
5.4.340.0200.08719.04
5.4.320.0130.07318.93
5.4.310.0170.07718.82
5.4.300.0130.05318.71
5.4.290.0130.09018.98
5.4.280.0070.09718.92
5.4.270.0100.09718.82
5.4.260.0130.10318.96
5.4.250.0070.10318.96
5.4.240.0230.08018.96
5.4.230.0170.06718.97
5.4.220.0230.08018.98
5.4.210.0070.09718.97
5.4.200.0100.10718.97
5.4.190.0170.09018.97
5.4.180.0170.11018.88
5.4.170.0170.09719.03
5.4.160.0170.09018.87
5.4.150.0170.06018.86
5.4.140.0070.08316.27
5.4.130.0230.08716.25
5.4.120.0170.10016.32
5.4.110.0130.09716.23
5.4.100.0130.10016.27
5.4.90.0100.06016.37
5.4.80.0130.09316.17
5.4.70.0270.06716.19
5.4.60.0200.09716.39
5.4.50.0200.06316.25
5.4.40.0230.08016.17
5.4.30.0170.09716.23
5.4.20.0230.09016.34
5.4.10.0100.08016.24
5.4.00.0130.06315.46

preferences:
58.45 ms | 401 KiB | 5 Q