3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i=0; $i<10; ++$i) { $reader = new XMLReader(); $reader->xml('<?xml version="1.0" encoding="utf-8"?><id>1234567890</id>'); while ($reader->read()) { } echo memory_get_peak_usage(true) . PHP_EOL; }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
2097152 2097152 2097152 2097152 2097152 2097152 2097152 2097152 2097152 2097152
Output for 5.2.1 - 5.2.17, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
262144 262144 262144 262144 262144 262144 262144 262144 262144 262144
Output for 5.3.0 - 5.3.29
786432 786432 786432 786432 786432 786432 786432 786432 786432 786432
Output for 5.1.2 - 5.1.6, 5.2.0
Fatal error: Call to undefined function memory_get_peak_usage() in /in/5fl7A on line 8
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.1
Fatal error: Class 'XMLReader' not found in /in/5fl7A on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: xmlreader in /in/5fl7A on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: xmlreader in /in/5fl7A on line 3
preferences:
197.94 ms | 401 KiB | 312 Q