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I'm trying to post json to a txt file but having some problems with my data. Whenever I check my data to be sent in jQuery it all looks fine, but if I print it out in php I see escape slashes and json_decode returns that data as empty. Here's the snippets of code:

jQuery

$.ajax({
    type : 'POST',
    url : 'update-json.php',
    dataType : 'json',
    data : {json : JSON.stringify([{'name':'Bob'},{'name':'Tom'}])},
    success : function(){
        console.log('success');
    },
    error : function(){
        console.log('error');
    }
});

PHP

<?php
    $json = $_POST['json'];
    $entries = json_decode($json);

    $file = fopen('data-out.txt','w');
    fwrite($file, $entries);
    fclose($file);
?>

PHP ECHO $json

[{\"name\":\"Bob\"},{\"name\":\"Tom\"}]

PHP ECHO $entries

//EMPTY
share|improve this question
From the docs for json_decode(): NULL is returned if the json cannot be decoded. – Jason McCreary Jan 16 at 18:16
Yea - I assume because of the extra slashes being added it can't decode it. I guess the real question is how to fix those quotes. – Syon Jan 16 at 18:23
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1 Answer

up vote 2 down vote accepted

It looks like you have magic_quotes turned on in PHP. Generally you should turn this off to avoid problems like this. If you can't do that you need to call stripslashes() on your incoming string.

You can also check json_last_error() to find out why it couldn't decode.

Edit: Here's how you put in stripslashes

$json = stripslashes($_POST['json']);
$entries = json_decode($json);

if( !$entries ) {
     $error = json_last_error();
     // check the manual to match up the error to one of the constants
}
else {

    $file = fopen('data-out.txt','w');
    fwrite($file, $json);
    fclose($file);
}
share|improve this answer
I tried $entries = stripslashes(json_decode($json)); but it writes [{\"name\":\"Bob\"},{\"name\":\"Tom\"}] to the txt file. Is there a way to not show those slashes? – Syon Jan 16 at 18:20
You need to call stripslashes before you call json_decode. That code calls json_decode first – Cfreak Jan 16 at 18:24
I updated my answer to show how you can put it in your code – Cfreak Jan 16 at 18:26
Thanks - I tried that but now it just writes Array to the file. – Syon Jan 16 at 18:29
I missed that you're printing $json to the file instead of $entries (in the code above). Is that your intent? If you just write $entries to the file I would expect it to say Array. What is the final result you're trying to accomplish? – Cfreak Jan 16 at 18:31
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