Php数组返回null？

Question

I have php file which reads a file and puts it's contents in specific arrays. This php file is a file on it's own. So I included it on another page. When I want to access one of the arrays on the other site, the output is "array(0) { }". The var_dump on the file below, however returns a full array with all 6 items(as expected).

Here my php file:

<?php

$englishTranslationsList = array();
$germanTranslationsList = array();
$timestampList = array();
$noteList = array();

function extractTranslationsFromFile($file){

    $handle = fopen($file, "r");
    if ($handle){

        while (($line = fgets($handle)) !== false) {

            $notelist[] = $line;

            $lineContent = substr($line, 3, strlen($line) - 1);

            switch(substr($line, 0, 3)):

            case "de:":  $germanTranslationsList[] = $lineContent;  break;
            case "en:":  $englishTranslationsList[] = $lineContent; break;
            case "ts:":  $timestampList[] = $lineContent; break;

            default: break;

            endswitch;

        }

        fclose($handle);

    }else{

        echo "<script>alert('ERROR')</script>";

    } 

    echo var_dump($germanTranslationsList);

}

?>

On the site where I included it, I used

<p><?php echo var_dump($germanTranslationsList); ?></p>

Which just shows an empty array as said above... What have I done wrong? Is there a way to fix it?

Answer 1

You need to bring the global variables into the function's scope using the global keyword:

<?php

$englishTranslationsList = array();
$germanTranslationsList = array();
$timestampList = array();
$noteList = array();

function extractTranslationsFromFile($file) {
    global $englishTranslationsList;
    global $germanTranslationsList;
    global $timestampList;
    global $noteList;

    // ...
}