3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str1 = 'meh'; $str2 = 'waff'; echo implode(array(array_keys(array($str1 => $str2))[0], array($str1 => $str2)[array_keys(array($str1 => $str2))[0]]));

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)
8.3.60.0040.01118.43
8.3.50.0150.00016.23
8.3.40.0110.00618.84
8.3.30.0060.00918.74
8.3.20.0000.00720.16
8.3.10.0000.00721.55
8.3.00.0040.00419.26
8.2.180.0110.00718.41
8.2.170.0070.00722.96
8.2.160.0100.00320.43
8.2.150.0050.00325.66
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00419.24
8.2.110.0070.00322.26
8.2.100.0110.00017.75
8.2.90.0090.00017.97
8.2.80.0000.00919.41
8.2.70.0080.00018.02
8.2.60.0060.00317.93
8.2.50.0040.00418.28
8.2.40.0030.00720.59
8.2.30.0030.00319.38
8.2.20.0020.00518.15
8.2.10.0030.00418.16
8.2.00.0050.00318.23
8.1.280.0120.01225.92
8.1.270.0040.00424.66
8.1.260.0030.00626.35
8.1.250.0030.00628.09
8.1.240.0080.00021.86
8.1.230.0030.00720.87
8.1.220.0030.00517.74
8.1.210.0030.00518.77
8.1.200.0060.00317.36
8.1.190.0100.00017.10
8.1.180.0030.00618.10
8.1.170.0050.00318.50
8.1.160.0050.00218.88
8.1.150.0040.00420.17
8.1.140.0050.00518.97
8.1.130.0030.00318.98
8.1.120.0040.00417.46
8.1.110.0060.00317.47
8.1.100.0000.00817.36
8.1.90.0040.00417.39
8.1.80.0040.00417.50
8.1.70.0000.00817.37
8.1.60.0000.00717.54
8.1.50.0000.00717.44
8.1.40.0040.00417.40
8.1.30.0040.00717.54
8.1.20.0040.00417.62
8.1.10.0050.00217.42
8.1.00.0040.00417.47
8.0.300.0080.00020.23
8.0.290.0040.00416.63
8.0.280.0040.00418.38
8.0.270.0030.00517.16
8.0.260.0000.00617.27
8.0.250.0030.00316.86
8.0.240.0000.00816.88
8.0.230.0060.00316.93
8.0.220.0030.00316.88
8.0.210.0030.00316.87
8.0.200.0000.00616.93
8.0.190.0040.00417.00
8.0.180.0000.00816.80
8.0.170.0040.00416.94
8.0.160.0000.00716.94
8.0.150.0000.00716.86
8.0.140.0000.00716.73
8.0.130.0000.00513.34
8.0.120.0080.00016.75
8.0.110.0040.00416.95
8.0.100.0000.00716.68
8.0.90.0070.00016.84
8.0.80.0130.00316.83
8.0.70.0020.00516.75
8.0.60.0040.00416.76
8.0.50.0000.00716.74
8.0.30.0140.00817.08
8.0.20.0090.00917.40
8.0.10.0040.00417.00
8.0.00.0130.00916.88
7.4.330.0020.00216.79
7.4.320.0030.00316.50
7.4.300.0030.00316.57
7.4.290.0070.00016.50
7.4.280.0000.00716.50
7.4.270.0030.00316.40
7.4.260.0040.00416.44
7.4.250.0000.00816.54
7.4.240.0030.00316.47
7.4.230.0040.00416.71
7.4.220.0000.00716.63
7.4.210.0120.00316.64
7.4.200.0000.00616.47
7.4.160.0120.00416.57
7.4.150.0160.00317.40
7.4.140.0100.00817.86
7.4.130.0070.01016.58
7.4.120.0090.01216.40
7.4.110.0090.00616.48
7.4.100.0100.00616.51
7.4.90.0030.01316.29
7.4.80.0070.01019.39
7.4.70.0100.00716.59
7.4.60.0060.01016.46
7.4.50.0030.01216.33
7.4.40.0130.00316.50
7.4.00.0070.01014.83
7.3.330.0050.00013.14
7.3.320.0050.00013.14
7.3.310.0040.00416.33
7.3.300.0000.00716.21
7.3.290.0050.01216.27
7.3.280.0040.01316.29
7.3.270.0130.00317.40
7.3.260.0110.00616.40
7.3.250.0110.00516.33
7.3.240.0080.01016.47
7.3.230.0090.00916.57
7.3.210.0110.00616.49
7.3.200.0150.00316.36
7.3.190.0160.00616.37
7.3.180.0040.01216.52
7.3.170.0070.01016.58
7.3.160.0030.01316.32
7.3.10.0000.01116.65
7.3.00.0070.00716.66
7.2.330.0070.01016.63
7.2.320.0100.00716.57
7.2.310.0090.00616.62
7.2.300.0070.01016.57
7.2.290.0110.00516.80
7.2.130.0060.00316.93
7.2.120.0080.00316.98
7.2.110.0000.00916.73
7.2.100.0070.00716.64
7.2.90.0040.01216.90
7.2.80.0120.00616.57
7.2.70.0190.00216.80
7.2.60.0060.00716.95
7.2.50.0110.00316.97
7.2.40.0060.01517.06
7.2.30.0070.00716.71
7.2.20.0070.00716.67
7.2.10.0070.00517.25
7.2.00.0080.01117.36
7.1.250.0030.01015.69
7.1.200.0030.00815.82
7.1.130.0320.01116.83
7.1.120.0540.00316.61
7.1.110.0540.01316.16
7.1.100.0040.01515.91
7.1.90.0000.01415.80
7.1.80.0320.01415.99
7.1.70.0390.00815.06
7.1.60.0710.01333.03
7.1.50.0500.02032.62
7.1.40.0410.01732.50
7.1.30.0650.00732.45
7.1.20.0160.01332.79
7.1.10.0340.00614.68
7.1.00.0050.00814.91

preferences:
30.03 ms | 400 KiB | 5 Q