Parse a JavaScript File Through PHP

Parse a JavaScript file through PHP

<script src="/path/to/my/file.php"></script>

In file.php you'll also want to output the correct header, before outputting anything you should have the following:

header("Content-Type: application/javascript");

EDIT: As @Tony_A pointed out, it should be application/javascript. I don't think it mattered as much when I wrote this post in 2010 :)

Best way to parse a Javascript file in PHP to extract the array defined inside it

You are looking for something like this. Note I had the .js file as local so I used file() to load it into array. For your actual script you'll probably need file_get_contents() if your php can't access locally the .js file.

<?php
$lines = file('test.js');

    $pages = array();

    foreach($lines as $line) {
        if(strpos($line, 'new Array') != false) {

            preg_match('/Page\[\d\]\s?\=\s?new Array\((\"(.*)",?\s?\n?)+\);/', $line, $matches);

            $values = preg_split('/,(?=(?:[^\"]*\"[^\"]*\")*(?![^\"]*\"))/', $matches[1]);

            $currNo = count($pages);
            $pages[$currNo] = array();

            for($i = 0; $i < count($values); $i++) {
                array_push($pages[$currNo], trim($values[$i], '"'));
            }

        }
    }

    var_dump($pages);

For your example the result will be the following:

array(2) {
  [0]=>
  array(4) {
    [0]=>
    string(10) "Some text1"
    [1]=>
    string(10) "More text1"
    [2]=>
    string(11) "Final Text1"
    [3]=>
    string(8) "abc.html"
  }
  [1]=>
  array(3) {
    [0]=>
    string(10) "Some text2"
    [1]=>
    string(10) "More text2"
    [2]=>
    string(8) "xyz.html"
  }
}

Enjoy!

Parse a JS script using PHP and REGEX to get a JS variable value

In this case, the end can be found by matching a semicolon at the end of a line:

if (preg_match('/^var pveapi = (.*?);$/ms', $js, $matches)) {
    $data = json_decode($matches[1]);
    print_r($data);
}

Parse js/css as a PHP file using htaccess

Try:

<FilesMatch "\.(js)$">
AddHandler application/x-httpd-php .js
</FilesMatch>

using php in js function (external .js file)

It's possible to have PHP parse/interpret your .js files just like it does with .php files, but it's generally a bad idea. (And certainly no PHP installation would do it by default.)

Instead, put the value you want in your .php file before your external JavaScript executes, and just reference it in your external JavaScript. For example:

<script type="text/javascript">
    var test1 = <?php echo x; ?>;
</script>
<script type="text/javascript" src="js/jakosc-powietrza.js"></script>

As the complexity grows there are various ways to manage scope, treating the dynamic value(s) as a dependency to be injected into an otherwise self-contained (unit testable) JavaScript module. But the premise remains the same.

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