3v4l.org

run code in 300+ PHP versions simultaneously
<?php // Have to double backslash to produce an actual single backslash $data = '\\u1F60A'; // UTF-8 encoding for \ is 5C -- string only has one echo bin2hex($data), PHP_EOL; // Display will differ depending on serialisation being used var_dump($data); print_r($data); echo PHP_EOL; var_export($data); echo PHP_EOL; echo json_encode($data), PHP_EOL;

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)
8.5.10.0120.00816.61
8.5.00.0090.01121.85
8.4.150.0030.00014.05
8.4.140.0200.00517.71
8.4.130.0070.00318.52
8.4.120.0130.00719.55
8.4.110.0110.00922.16
8.4.100.0110.01017.84
8.4.90.0080.00820.60
8.4.80.0090.01118.63
8.4.70.0100.01220.68
8.4.60.0080.00720.32
8.4.50.0070.01122.19
8.4.40.0060.00317.63
8.4.30.0060.01320.38
8.4.20.0150.00721.20
8.4.10.0080.00019.41
8.3.280.0130.00818.16
8.3.270.0120.00916.58
8.3.260.0120.00716.57
8.3.250.0140.00516.62
8.3.240.0090.00516.36
8.3.230.0090.01016.45
8.3.220.0040.00318.99
8.3.210.0080.01016.45
8.3.200.0060.00316.39
8.3.190.0100.01017.21
8.3.180.0070.01118.87
8.3.170.0090.00917.09
8.3.160.0110.00316.60
8.3.150.0040.00418.23
8.3.140.0040.00418.75
8.3.130.0000.00818.42
8.3.120.0000.00820.63
8.3.110.0090.00816.53
8.3.100.0180.00616.52
8.3.90.0200.00316.01
8.3.80.0270.00016.13
8.3.70.0220.00516.00
8.3.60.0160.01016.50
8.3.50.0210.00516.38
8.3.40.0210.00717.25
8.3.30.0210.00017.23
8.3.20.0150.00817.13
8.3.10.0150.00717.00
8.3.00.0210.00017.38
8.2.290.0090.01116.41
8.2.280.0100.00918.38
8.2.270.0090.00920.31
8.2.260.0070.00717.14
8.2.250.0030.00616.85
8.2.240.0090.00617.09
8.2.230.0190.00416.38
8.2.220.0110.00816.31
8.2.210.0100.01016.30
8.2.200.0130.00816.50
8.2.190.0160.00616.38
8.2.180.0190.00316.13
8.2.170.0220.00317.37
8.2.160.0170.00717.63
8.2.150.0240.00017.13
8.2.140.0240.00017.24
8.2.130.0150.00817.13
8.2.120.0200.00417.25
8.2.110.0200.00817.22
8.2.100.0150.00817.13
8.2.90.0180.00417.50
8.2.80.0170.00617.13
8.2.70.0190.00417.13
8.2.60.0130.01017.25
8.2.50.0120.01216.74
8.2.40.0220.00017.25
8.2.30.0140.00917.25
8.2.20.0210.00317.38
8.2.10.0130.00817.13
8.2.00.0120.00817.13
8.1.330.0130.00616.09
8.1.320.0140.00517.98
8.1.310.0140.00416.80
8.1.300.0040.00415.94
8.1.290.0170.00615.99
8.1.280.0140.00716.00
8.1.270.0210.00017.02
8.1.260.0130.00717.13
8.1.250.0190.00317.00
8.1.240.0170.00417.00
8.1.230.0150.00317.11
8.1.220.0090.00917.22
8.1.210.0060.01117.13
8.1.200.0130.00416.98
8.1.190.0180.00016.88
8.1.180.0180.00017.00
8.1.170.0120.00517.11
8.1.160.0150.00316.88
8.1.150.0120.00616.88
8.1.140.0110.00716.97
8.1.130.0120.00617.12
8.1.120.0130.00817.13
8.1.110.0170.00317.13
8.1.100.0170.00017.25
8.1.90.0060.01216.97
8.1.80.0130.00816.97
8.1.70.0210.00016.88
8.1.60.0180.00417.11
8.1.50.0220.00017.25
8.1.40.0180.00417.25
8.1.30.0200.00417.11
8.1.20.0170.00317.50
8.1.10.0210.00017.22
8.1.00.0170.00317.13

preferences:
44.16 ms | 403 KiB | 5 Q