Inserting PHP array into Javascript array

Question

I have an array like this:

Array
(
[0] => Array
    (
        [id] => 9826
        [tag] => "php"
    )

[1] => Array
    (
        [id] => 9680            
        [tag] => "perl"
    )

)

I want to pass this to a javascript variable that looks like this:

var availableTags = [
        "ActionScript",
        "AppleScript",
        "Asp",
        "BASIC",
        "C",
        "C++",
        "Clojure",
        "COBOL",
        "ColdFusion",
        "Erlang",
        "Fortran",
        "Groovy",
        "Haskell",
        "Java",
        "JavaScript",
        "Lisp",
        "Perl",
        "PHP",
        "Python",
        "Ruby",
        "Scala",
        "Scheme"
    ];

I have gotten this far:

var availableTags = [
        <?php
                        foreach($Tags as $tag){
                              echo $tag['tag'];
                        }
                    ?>
    ];

the problem I have is adding the double quotes around each tag and inserting a comma after each apart from the last.

I'm not sure of how to best do that?

thetaiko · Accepted Answer · 2010-10-12T13:32:30.513

10

Save yourself some lines of code:

var availableTags = <?php
function get_tag($value) {
    return $value['tag'];
}
echo json_encode(array_map("get_tag", $Tags));
?>

edited Oct 12 '10 at 13:32

answered Oct 12 '10 at 13:22

thetaiko

7,816
2
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49

+1, this is exactly what `json_encode` is for. But it's not quite right, you need to make an array in PHP which is just 'tag', and `json_encode` that. – Skilldrick Oct 12 '10 at 13:26
@Skilldrick - indeed you are correct. Code changed appropriately. – thetaiko Oct 12 '10 at 13:32
Use a lambda instead of a named function. `array_map(function($this){ /**/ }, $Tags);` Other than that, +1 – BBonifield Oct 12 '10 at 13:50
2

@BBonifield - would have except that a lot of people not yet using >= PHP 5.3. – thetaiko Oct 12 '10 at 13:56

score 6 · Answer 2 · answered Oct 12 '10 at 13:16

6

var availableTags = [
<?php
  $tag_strings = array();
  foreach($Tags as $tag){
        $tag_strings[] = '"'.$tag['tag'].'"';
  }
  echo implode(",", $tag_strings);
  ?>
];

answered Oct 12 '10 at 13:16

Mikee

2,403
2
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Phill Pafford · Answer 3 · 2010-10-12T13:47:35.347

2

var availableTags = [
        <?php
                        foreach($Tags as $tag){
                              echo '"'.$tag['tag'].'",';
                        }
                    ?>
    ];

edited Oct 12 '10 at 13:47

answered Oct 12 '10 at 13:17

Phill Pafford

83,471
91
263
383

1

The extra comma will break IE. – Blair McMillan Oct 12 '10 at 13:34
hmm jQuery handles this, but after testing you guys are right. ugh, learning – Phill Pafford Oct 12 '10 at 13:48

score 1 · Answer 4 · edited Sep 12 '11 at 18:09

1

Try:

var availableTags = <?php
echo json_encode(array_map(create_function('$v','return $v[\'tag\'];'), $Tags));
?>;

edited Sep 12 '11 at 18:09

Jérôme Verstrynge

57,710
92
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453

answered Aug 13 '11 at 18:31

caiguanhao

444
1
4
12

Q_Mlilo · Answer 5 · 2010-10-12T13:39:54.843

0

<?php 
$arr = array(
0 => array("id" => 9826, "tag" => "php"),

1 => array("id" => 9680, "tag" => "perl")
);

$my_array;

foreach($arr as $key=>$val) {
   $my_array[] = $arr[$key]['tag'];
}

$availableTags = json_encode($my_array);
echo $availableTags;
?>

edited Oct 12 '10 at 13:39

answered Oct 12 '10 at 13:32

Q_Mlilo

1,729
4
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Inserting PHP array into Javascript array

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