PHP function calls returning references
Let's say we have this function:
<?php
function &collector() {
static $c = array();
return $c;
}
?>we can use this like the following (very familiar to D7 coders):
<?php
// Note that $x = collector(); won't work.
$x = &collector();
$x[] = 'foo';
?>Say you wanted to have one line code:
<?php
array_push(&collector(), 'foo');
?>PHP Fatal error: Can't use function return value in write context.
Makes sense? Not to me. However, the following works:
<?php
array_push(collector(), 'foo');
?>How can this work? Well it turns out the Zend Engine has a special case to handle this so do not try to deduce it from knowledge of how references work in general. It works "just because".
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I have used this <?php
I have used this
<?phparray_push(&collector(), 'foo');
?>
but it shows nothing.
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Just follow a certain
Just follow a certain strings.
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Well it turns out the Zend
Well it turns out the Zend Engine has a special case to handle this so do not try to deduce it from knowledge of how references work in general. It works "just because.
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