parse javascript text with php

Question

Greetings! I have heard of various methods to capture and return text. For example regular expressions. I am slightly new to PHP but I was wondering how I would capture and return text from this JavaScript code using PHP. I am only interested in capturing msgBody, msgTitle, and insertDate. Thank you for looking my my problem

function wibiyaNotifierLoad() {
    if (typeof(jQuery.cookie) == 'function') {
        loadjscssfile("Graphics_Toolbar/Notifier/notifier_2.css?v2", "css", "head");
        var data = {
            "count": 1,
            "notifications": [{
                "Id": "264727",
                "toolbarId": "602582",
                "msgId": "9",
                "msgTitle": "Its that time of year!",
                "msgBody": "check you email for updates!",
                "msgLink": "",
                "msgImage": "",
                "filter": "",
                "startDate": "2011-03-22 23:00:00",
                "expirationDate": "2011-03-23 00:00:00",
                "active": "1",
                "insertDate": "2011-03-22 23:12:31"
            }],
            "ok": true
        };

What do you mean by "capture" exactly? In what context? Are you preparing an Ajax call, or parsing the source file? — Pekka
– Pekka, Commented Mar 25, 2011 at 10:56

mario · Accepted Answer · 2011-03-25 12:01:32Z

2

When you say parsing, you should look into J4P5. But you can probably get away with an inexact solution and regular expressions here. To capture the text and then extract individual values:

preg_match('#(\[\{.*?\}\])#s', $javascript, $match);
$values = json_decode($match[1], TRUE);

$msgBody = $values[0]["msgBody"];

Could make the regex more explicit by starting it with '#"notifications": (\[\{ however.

edited Mar 25, 2011 at 12:01

answered Mar 25, 2011 at 10:59

mario

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1 Comment

mario Over a year ago

@jimmy: True, just tested. The closing brackets where wrong. Fixed.

Riimu · Accepted Answer · 2011-03-25 11:17:15Z

For a single regex to capture the data you need, you could use the following pattern (note that this needs backslashes and quotes to the escaped when inserted into code):

/(["'])(msgBody|msgTitle|insertDate)\1\s*:\s*(['"])((?:[^'"\\]+|\\.|(?!\3|\\).)*)\3/s

The name of the key will be in the sub capture 2 and the actual content in the sub capture 4. For example, let's assume your javascript is stored in $text, you could use the following PHP code to extract the information:

<?php

$regex = '/(["\'])(msgBody|msgTitle|insertDate)\\1\\s*:\\s*([\'"])((?:[^\'"\\\\]+|\\\\.|(?!\\3|\\\\).)*)\\3/s';
preg_match_all($regex, $text, $match, PREG_SET_ORDER);

$data = array();

foreach ($match as $cap)
{
    $data[$cap[2]] = $cap[4];
}

var_dump($data);

Luca Filosofi · Accepted Answer · 2011-03-25 11:28:19Z

2

 preg_match('/\[(.*?)\]/s', $javascript, $match);
 $json = json_decode($match[1]);
 print $json->{'msgBody'};
 print $json->{'msgTitle'};
 print $json->{'insertDate'};

answered Mar 25, 2011 at 11:28

Luca Filosofi

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Comments

Rho · Accepted Answer · 2011-03-25 10:56:44Z

0

I often use the preg_replace function to capture some data that I want. You can try it out here:

http://www.functions-online.com/preg_replace.html

This website provides tools that you can use to hone your regular expression skills

http://gskinner.com/RegExr/

answered Mar 25, 2011 at 10:56

Rho

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