将字符串，变量和数组索引连接到一个变量

Question

I'm trying to do something out of my league, but I don't see how else I can achieve it.

I have two array variables.

<?php
$mobile_eu = array("alb", "bul");
$m_alb = array(array("Albanian"), array("[e-mail]"),
    array("[e-mail]", "[e-mail]");
?>

What I'm trying to do is, get alb from $mobile_eu, prepend a string to the value, and then access $m_alb from it with [0][0] index. Something like...

function createLink($category) {
  foreach ($category as $short) {
  $langcode = "\$m_" . $short . [0][0];
  }
}

and yes, it doesn't work. When I dumped it, all it shows is

string 'alb0' (length=4)

What I hope to achieve here is to get

string 'Albanian' (length=8)

Is there any way to get this?

Any help would be great. Thanks.

Answer 1

<?php
$mobile_eu = array("alb", "bul");
$m_alb = array(array("Albanian"), array("[e-mail]"),
    array("[e-mail]", "[e-mail]"));


echo ${'m_'.$mobile_eu[0]}[0][0];

prints Albania.

see also: http://docs.php.net/language.variables.variable

---

But I think you should structure your data in another way, so you don't need something like this. E.g. instead of having a variable $m_alb and another $m_bul you could have an array where 'alb' and 'bul' are keys/elements:

<?php
createLinks( array('alb','bul') );

function createLinks($regions) {
    static $data = array ( /* using static only as an example for "some data source" */
        'alb' => array(
            array("Albanian"), /* it would certainly be nice if you could give */
            array("[e-mail]"), /* those elements key-names with some meaning */
            array("[e-mail]", "[e-mail]")
        ),
        'bul' => array(
            array("Bulgaria"),
            array("[e-mail]"),
            array("[e-mail]", "[e-mail]")
        ),
    );

    foreach( $regions as $r ) {
        echo $data[$r][0][0], "<br />
";
    }
}