3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str1 = 'meh'; $str2 = 'waff'; echo implode(array(array_keys(array_combine(array($str1), array($str2)))[0], array_combine(array($str1), array($str2))[array_keys(array_combine(array($str1), array($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)
8.3.70.0120.00618.30
8.3.60.0110.00318.18
8.3.50.0000.01418.25
8.3.40.0110.00718.73
8.3.30.0120.00318.67
8.3.20.0040.00420.20
8.3.10.0070.00021.94
8.3.00.0040.00419.13
8.2.180.0070.01118.46
8.2.170.0090.00622.96
8.2.160.0100.00320.32
8.2.150.0050.00325.66
8.2.140.0000.00824.66
8.2.130.0040.00421.00
8.2.120.0040.00426.35
8.2.110.0030.00720.94
8.2.100.0000.01118.16
8.2.90.0050.00319.41
8.2.80.0040.00417.97
8.2.70.0060.00318.05
8.2.60.0000.00818.03
8.2.50.0000.00818.16
8.2.40.0030.00720.30
8.2.30.0070.00019.48
8.2.20.0020.00518.13
8.2.10.0040.00417.93
8.2.00.0040.00418.27
8.1.280.0110.00425.92
8.1.270.0000.00720.00
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.00321.36
8.1.230.0040.00720.38
8.1.220.0000.00717.74
8.1.210.0060.00318.77
8.1.200.0030.00617.22
8.1.190.0050.00317.23
8.1.180.0030.00618.10
8.1.170.0000.00818.65
8.1.160.0000.00818.85
8.1.150.0080.00020.18
8.1.140.0050.00518.96
8.1.130.0000.00818.97
8.1.120.0000.00717.41
8.1.110.0000.01017.45
8.1.100.0040.00417.38
8.1.90.0040.00417.44
8.1.80.0030.00517.36
8.1.70.0070.00017.48
8.1.60.0080.00017.49
8.1.50.0000.00717.53
8.1.40.0030.00617.54
8.1.30.0060.00517.69
8.1.20.0040.00417.62
8.1.10.0040.00417.64
8.1.00.0050.00217.52
8.0.300.0030.00618.77
8.0.290.0040.00416.58
8.0.280.0040.00418.38
8.0.270.0070.00017.16
8.0.260.0000.00617.25
8.0.250.0000.00716.86
8.0.240.0000.00716.93
8.0.230.0090.00016.87
8.0.220.0000.00716.79
8.0.210.0030.00316.91
8.0.200.0030.00316.99
8.0.190.0050.00516.92
8.0.180.0000.00716.90
8.0.170.0000.00916.91
8.0.160.0030.00616.95
8.0.150.0030.00316.84
8.0.140.0000.00716.74
8.0.130.0000.00513.36
8.0.120.0080.00016.84
8.0.110.0000.00716.89
8.0.100.0000.00716.75
8.0.90.0000.00716.87
8.0.80.0070.01016.90
8.0.70.0070.00016.71
8.0.60.0050.00216.73
8.0.50.0040.00416.75
8.0.30.0120.00816.86
8.0.20.0100.01117.40
8.0.10.0040.00416.88
8.0.00.0080.01016.70
7.4.330.0050.00015.55
7.4.320.0030.00316.43
7.4.300.0030.00316.45
7.4.290.0030.00316.57
7.4.280.0050.00316.55
7.4.270.0030.00316.43
7.4.260.0000.00716.48
7.4.250.0070.00016.47
7.4.240.0000.00716.55
7.4.230.0000.00716.40
7.4.220.0090.00016.55
7.4.210.0040.01116.63
7.4.200.0030.00516.44
7.4.160.0080.01216.50
7.4.150.0150.00317.40
7.4.140.0090.00817.86
7.4.130.0110.00816.34
7.4.120.0110.01116.52
7.4.110.0090.00616.52
7.4.100.0100.00716.47
7.4.90.0080.01116.58
7.4.80.0070.01119.39
7.4.70.0100.01016.60
7.4.60.0150.00016.37
7.4.50.0060.00916.34
7.4.40.0110.00516.47
7.4.00.0100.00315.14
7.3.330.0020.00213.18
7.3.320.0020.00213.08
7.3.310.0040.00416.33
7.3.300.0040.00416.35
7.3.290.0060.00916.31
7.3.280.0060.00916.38
7.3.270.0000.01817.40
7.3.260.0100.00816.37
7.3.250.0120.00516.41
7.3.240.0150.00416.45
7.3.230.0060.01116.36
7.3.210.0060.01016.42
7.3.200.0060.00916.58
7.3.190.0120.00616.28
7.3.180.0120.00916.52
7.3.170.0090.00616.45
7.3.160.0070.01416.48
7.2.330.0100.00716.64
7.2.320.0130.00316.34
7.2.310.0060.01016.73
7.2.300.0110.00916.46
7.2.290.0060.01316.53
7.2.60.0030.00616.85
7.2.10.0170.01017.49
7.2.00.0150.00617.70
7.1.200.0080.00015.39
7.1.130.0070.01116.51
7.1.120.0110.00716.93
7.1.110.0140.00716.21
7.1.100.0090.00915.80
7.1.90.0090.01216.03
7.1.80.0100.01416.03
7.1.70.0120.00615.15
7.1.60.0360.00733.31
7.1.50.0140.01833.05
7.1.40.0260.01332.44
7.1.30.0270.00832.50
7.1.20.0240.01232.64
7.1.10.0130.00614.74
7.1.00.0150.00914.84

preferences:
67.38 ms | 401 KiB | 5 Q