<?php
//código com o problema
function &olaMundoRef(){
return 'Ola mundo'. PHP_EOL;
}
//código sem problema
function &olaMundo(){
$x = 'Ola mundo';
return $x;
}
echo olaMundoRef();
echo olaMundo();
Notice: Only variable references should be returned by reference in /in/ZbXSD on line 4
Ola mundo
Ola mundo
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
Notice: Only variable references should be returned by reference in /in/ZbXSD on line 4
Ola mundo
Ola mundo
Output for 4.3.10 - 4.3.11, 7.3.32 - 7.3.33
Ola mundo
Ola mundo
Output for 5.0.2 - 5.0.5
Strict Standards: Only variable references should be returned by reference in /in/ZbXSD on line 4
Ola mundo
Ola mundo
Output for 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/ZbXSD on line 4
Strict Standards: Only variable references should be returned by reference in /in/ZbXSD on line 4
Ola mundoPHP_EOLOla mundo
Output for 4.3.0 - 4.3.9
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/ZbXSD on line 4
Ola mundoPHP_EOLOla mundo