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Getting Vars value from function

I am using this function;

function forums_fid()
{
    if (!defined('FORUMS_FID'))
    {
        $maktaba_fid = '14';
        $ask_question_fid = '9';
    }
    define('FORUMS_FID', 1);
}

I want to use the values ​​of variables in another function, so I am trying to use this code for that;

forums_fid();
$maktaba = '<a href="www.domain.com/forumdisplay.php?fid='.$maktaba_fid.'"><img src="./images/maktaba.png" alt="" title=""></a>';
$ask_question = '<a href="www.domain.com/newthread.php?fid='.$ask_question_fid.'"><img src="./images/ask-question.png" alt="" title=""></a>';

Bur unfortunately the variables are empty in this second code.

Please, help!

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3 answers


Forget what I said earlier. What you can do is define two empty variables (NULL) and declare them global in the function, overwrite them with whatever you want, and then use them. By the way, you need to put define () inside if-clausel or PHP will throw an error.

function forums_fid()
{
    global $maktaba_fid, $ask_question_fid;

    if (!defined('FORUMS_FID'))
    {
        define('FORUMS_FID', 1);
        $maktaba_fid = '14';
        $ask_question_fid = '9';
    }
}

$maktaba_fid = NULL;
$ask_question_fid = NULL;
forums_fid();
$maktaba = '<a href="www.domain.com/forumdisplay.php?fid='.$maktaba_fid.'"><img src="./images/maktaba.png" alt="" title=""></a>';
$ask_question = '<a href="www.domain.com/newthread.php?fid='.$ask_question_fid.'"><img src="./images/ask-question.png" alt="" title=""></a>';


This is one way. The best way would be to actually return the values ​​(e.g. as an array).

function forums_fid()
{
    if (!defined('FORUMS_FID'))
    {
        define('FORUMS_FID', 1);
        return array('maktaba_fid' => 14, 'ask_question_fid' => 9);
    }
}

$return = forums_fid();
$maktaba = '<a href="www.domain.com/forumdisplay.php?fid='.$return['maktaba_fid'].'"><img src="./images/maktaba.png" alt="" title=""></a>';
$ask_question = '<a href="www.domain.com/newthread.php?fid='.$return['ask_question_fid'].'"><img src="./images/ask-question.png" alt="" title=""></a>';
+3


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I would recommend a super variable . $GLOBALS 

function forums_fid()
{
    if (!defined('FORUMS_FID'))
    {
        $GLOBALS['maktaba_fid'] = '14';
        $GLOBALS['ask_question_fid'] = '9';
    }
    define('FORUMS_FID', 1);
}

forums_fid();
echo $GLOBALS['maktaba_fid'].PHP_EOL;
echo $GLOBALS['ask_question_fid'];


DEMO:



http://3v4l.org/k7TVA


Documentation:

http://php.net/manual/en/language.variables.scope.php

+1


source


try it

function forums_fid()
{
    global $maktaba_fid;
    global $ask_question_fid;
    if (!defined('FORUMS_FID'))
    {
        $maktaba_fid = '14';
        $ask_question_fid = '9';
        define('FORUMS_FID', 1);
    }

}
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