3v4l.org

run code in 300+ PHP versions simultaneously
<?php $year=2021; $month=7; $day=5; $index=-1; $period='day'; // strtotime test $dateString = $year . "-" . $month . "-" . $day . " -" . $index . " " . $period; $timestamp1 = strtotime("{$year}-{$month}-{$day} -{$index} {$period}"); $dateString1 = date('Y-m-d', $timestamp1); // DateTime test $dateStamp = new \DateTime("{$year}-{$month}-{$day}"); $dateStamp->modify("-{$index} {$period}"); $timestamp2 = $dateStamp->getTimeStamp(); $dateString2 = date('Y-m-d', $timestamp2); echo $dateString . PHP_EOL; echo "strtotime: " . $timestamp1 . "(" . $dateString1 . ")" . PHP_EOL; echo "DateTime: " . $timestamp2 . "(" . $dateString1 . ")";

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)
8.5.10.0100.00619.53
8.5.00.0090.01422.99
8.4.150.0010.00114.05
8.4.140.0160.00617.79
8.4.130.0120.00818.13
8.4.120.0100.01022.37
8.4.110.0050.00522.48
8.4.100.0060.00418.00
8.4.90.0160.00618.39
8.4.80.0110.00918.98
8.4.70.0110.00918.07
8.4.60.0080.00318.82
8.4.50.0140.00817.84
8.4.40.0140.00620.75
8.4.30.0130.00722.27
8.4.20.0080.00018.30
8.4.10.0040.00421.86
8.3.280.0130.00818.61
8.3.270.0160.00616.69
8.3.260.0090.01116.54
8.3.250.0150.00418.97
8.3.240.0110.00516.66
8.3.230.0110.01016.66
8.3.220.0040.00319.04
8.3.210.0100.00616.82
8.3.200.0060.00316.66
8.3.190.0060.00418.93
8.3.180.0130.00616.56
8.3.170.0150.00317.00
8.3.160.0080.00616.82
8.3.150.0000.00818.83
8.3.140.0120.00617.31
8.3.130.0030.00518.42
8.3.120.0050.00518.89
8.3.110.0060.00320.94
8.3.100.0030.00718.49
8.3.90.0060.00326.77
8.3.80.0060.00318.43
8.3.70.0110.01116.88
8.3.60.0120.00316.63
8.3.50.0140.00718.53
8.3.40.0040.01120.39
8.3.30.0070.00720.97
8.3.20.0050.00224.18
8.3.10.0000.00724.66
8.3.00.0040.00426.16
8.2.290.0050.00420.66
8.2.280.0040.00518.25
8.2.270.0040.01417.45
8.2.260.0080.00019.05
8.2.250.0080.00019.33
8.2.240.0080.00016.81
8.2.230.0100.01022.58
8.2.220.0040.00424.06
8.2.210.0040.00426.77
8.2.200.0000.00918.54
8.2.190.0110.00718.66
8.2.180.0160.00017.13
8.2.170.0140.00719.04
8.2.160.0030.01022.96
8.2.150.0000.00825.66
8.2.140.0000.00824.66
8.2.130.0000.00826.16
8.2.120.0050.00319.61
8.2.110.0030.00721.14
8.2.100.0080.00418.03
8.2.90.0030.00618.09
8.2.80.0050.00318.22
8.2.70.0030.00617.63
8.2.60.0110.00717.63
8.2.50.0120.00617.62
8.2.40.0060.01017.59
8.2.30.0160.00017.50
8.2.20.0170.00017.86
8.2.10.0140.00317.75
8.2.00.0140.00517.63
8.1.330.0130.00622.23
8.1.320.0120.00816.45
8.1.310.0070.01017.02
8.1.300.0100.00618.00
8.1.290.0070.00430.84
8.1.280.0100.00625.92
8.1.270.0120.00624.66
8.1.260.0040.00426.35
8.1.250.0030.00628.09
8.1.240.0060.00319.70
8.1.230.0000.01120.95
8.1.220.0080.00017.89
8.1.210.0030.00619.06
8.1.200.0000.00817.47
8.1.190.0100.00717.38
8.1.180.0190.00017.25
8.1.170.0170.00017.25
8.1.160.0100.00717.63
8.1.150.0120.00617.36
8.1.140.0070.01017.50
8.1.130.0180.00017.62
8.1.120.0090.00917.63
8.1.110.0130.00617.38
8.1.100.0070.01017.63
8.1.90.0120.00417.38
8.1.80.0120.00417.63
8.1.70.0130.00517.50
8.1.60.0120.00617.50
8.1.50.0120.00617.50
8.1.40.0150.00317.63
8.1.30.0170.00217.38
8.1.20.0000.01817.48
8.1.10.0170.00017.71
8.1.00.0130.00417.38
8.0.300.0030.00319.96
8.0.290.0050.00317.00
8.0.280.0070.01016.71
8.0.270.0090.00916.84
8.0.260.0130.00416.88
8.0.250.0130.00416.61
8.0.240.0130.00317.13
8.0.230.0060.01116.75
8.0.220.0170.00016.98
8.0.210.0120.00616.63
8.0.200.0130.00416.86
8.0.190.0100.00716.88
8.0.180.0070.01016.85
8.0.170.0110.00516.88
8.0.160.0170.00016.63
8.0.150.0140.00316.88
8.0.140.0110.00716.88
8.0.130.0170.00016.84
8.0.120.0150.00416.88
8.0.110.0110.00516.74
8.0.100.0110.00616.88
8.0.90.0110.00616.88
8.0.80.0070.01016.73
8.0.70.0130.00616.85
8.0.60.0140.00316.74
8.0.50.0170.00016.88
8.0.30.0130.00316.75
8.0.20.0130.00516.75
8.0.10.0100.01017.00

preferences:
102.57 ms | 403 KiB | 5 Q