How to find whether a json array is empty or not?

Question

How to find whether a json array is empty or not using PHP? empty($jsonarray) seems doesn't work!

Seriously, since when did PHP have json arrays? Never heard of them before. — awm, Apr 02 '11 at 07:27

score 7 · Answer 1 · answered Apr 02 '11 at 07:31

Assuming you have decoded the JSON, yes it does.

<?php
    $json = '{"hello": ["world"], "goodbye": []}';
    $decoded = json_decode($json);
    print "Is hello empty? " . empty($decoded->{'hello'});
    print "\n";
    print "Is goodbye empty? " . empty($decoded->{'world'});
    print "\n";
?>

gives:

Is hello empty?
Is goodbye empty? 1

score 5 · Answer 2 · answered Apr 02 '11 at 07:33

5

Try this

if(count(json_decode($jsonarray,1))==0) {
    echo "empty";
}

//or
if(empty(json_decode($jsonarray,1))) {
    echo "empty";
}

answered Apr 02 '11 at 07:33

Starx

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score 0 · Answer 3 · answered Oct 14 '13 at 12:14

0

The empty JSON array's value is simply [], so you can search for it after the name of the array or in the string if you prints out an array.

answered Oct 14 '13 at 12:14

Szigyártó Mihály

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10

How to find whether a json array is empty or not?

3 Answers3