Variable scope: creating a global array within a function 1

[SCelia]

I have a function eval_code. In the function I have

eval($eval_str);

in $eval_str I have:

$title[] = $row['title'];

I want the array $title to be availiable to a required file later on in the page.

i.e.

eval_code($php_doc)

require('foo');

where foo uses the array $title. If you followed that, can you tell me how to do such a thing?

Thanks, Celia

 

[sleipnir214]

Normally, any variables created in a function are deleted when the function ends. That's why using "global" on a local variable doesn't work. (It might be global for all I know -- until the function ends.)

But, you can create new variables within a function that persist after the function ends. Instead of referencing "$title", reference "$GLOBALS['title']".

This code snippet may help point you in the right direction. It takes the string to be eval'd, uses preg_replace to replace all local variable references to references to $GLOBALS, then evals the modified string. The value is available from outside the function.

[tt][code<?php

function evalString ($instring)
{
$instring = preg_replace ('/\$([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)/',
'$GLOBALS[&quot;$1&quot;]',
$instring);
eval ($instring);
}

evalString ('$title = 3;');

print $title;

?>
[/code][/tt]

Does this help?
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[SCelia]

Thanks sleipnir, that clears things up a bit.

I actually took the code out of the function becuase it solved a lot of bugs I was having. Celia