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To supplement an example with an assignment without & for &-function #4557

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To supplement an example with an assignment without & for &-function #4557

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references.xml To supplement an example with an assignment without & …
mmalferov Mar 23, 2025
33fc092
Update references.xml Move comments after assignment
mmalferov Mar 23, 2025
07aa4be
Update references.xml Clarify the wording
mmalferov Mar 23, 2025
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14 changes: 14 additions & 0 deletions language/references.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -490,12 +490,26 @@ function &collector()
}

$collection = &collector();
// Now the $collection is a referenced variable that references the static array inside the function

$collection[] = 'foo';

print_r(collector());
// Array
// (
// [0] => foo
// )

?>
]]>
</programlisting>
</informalexample>
<note>
<simpara>
If the assignment is done without the <literal>&amp;</literal> symbol, e.g. <code>$collection = collector();</code>,
the <varname>$collection</varname> variable will receive a copy of the value, not the reference returned by the function.
</simpara>
</note>
To pass the returned reference to another function expecting a reference
you can use this syntax:
<informalexample>
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