Passing a multidimensional PHP array to javascript - Stack Overflow

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I have an array($my_array) that looks something like:

array(2) {
[25]=>int(10)
[30]=>int(8)
}

I'd like to assign it to a javascript array, but am having difficulties doing it. Any suggestions?

Edit: At first, I thought I could just assign it like a string, but that isn't working:

var photo_limit = $my_array;

I tried also doing a var_dump into my js value.

I'm currently trying to use something like:

for($i=0;$i<count($my_array); $i++){
echo "a[$i]='".$a[$i]."';\n";
}

Thanks.

I have an array($my_array) that looks something like:

array(2) {
[25]=>int(10)
[30]=>int(8)
}

I'd like to assign it to a javascript array, but am having difficulties doing it. Any suggestions?

Edit: At first, I thought I could just assign it like a string, but that isn't working:

var photo_limit = $my_array;

I tried also doing a var_dump into my js value.

I'm currently trying to use something like:

for($i=0;$i<count($my_array); $i++){
echo "a[$i]='".$a[$i]."';\n";
}

Thanks.

• php
• javascript

Share Improve this question Follow edited Aug 12, 2011 at 13:33 etm124 asked Aug 12, 2011 at 13:27 etm124etm124 2,14044 gold badges4141 silver badges7878 bronze badges 2

• how are you doing it now? when do you need to initiate it? – Kasia Gogolek Commented Aug 12, 2011 at 13:28
• 2 I would use json_encode to encode the object as JSON. JSON is perfect when working with JS. – Jay Commented Aug 12, 2011 at 13:29

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 10

The best way is to use json_encode. See json_encode reference

Used like this:

<script>
var array = <?php echo json_encode($array)?>;
</script>

Note, hovewer, that you'll receive Javascript object, instead of array. At a glance the only difference is if you have string keys in your array, you'll be able to access them in JS like array.*string key*, i.e. using dot notation.

1: json_encode your PHP array.

2: Decode the JSON string in JavaScript using eval(alternative: jQuery.parseJSON)

<script>
    var arr = eval('(<?php echo json_encode($thePhpArray); ?>)');
</script>

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