3v4l.org

run code in 300+ PHP versions simultaneously
<?php class cls { protected $m_str = ''; function __construct( string & $str ) { $this->m_str = & $str; $this->m_str = 'first change'; $this->method( ); } protected function method( ) { $this->m_str = 'second change'; } } $str = 'unchanged'; $obj = new cls( $str ); echo "<br> str = $str";
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 - 8.3.4, 8.3.6
<br> str = second change
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 <br> str = second change
preferences:
144.9 ms | 402 KiB | 173 Q