convert array element from string to number

Question

I've some numbers which come from a query and that I have to represent using the json_encode function. Everything work but the output looks like this

{ "label": "man", "data":[["0","1.13"], ["1","1.38"], ["2","1.87"], ["3","1.12"], ["4","1.28"]]}

so I think that the problem is that all the numbers are stored as string. Is there a function to convert all the elements in number?

"so I think that the problem is that all the numbers are stored as string." What problem? — gen_Eric
– gen_Eric, Commented Nov 10, 2011 at 22:36

SERPRO · Accepted Answer · 2011-11-10 22:36:23Z

4

You might want to add JSON_NUMERIC_CHECK to your json_encode function:

   json_encode($array, JSON_NUMERIC_CHECK);

answered Nov 10, 2011 at 22:36

SERPRO

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3 Comments

gen_Eric Over a year ago

Just FYI, this was added in PHP 5.3.3.

SERPRO Over a year ago

@Rocket I know, just want to let him know the options available.

SERPRO Over a year ago

Glad I could help. You can mark the answer as correct if you want

Jasper · Accepted Answer · 2011-11-10 22:36:41Z

1

You can get the integer or float value of a variable with this:

echo (integer)$variable;
echo (float)$variable;

answered Nov 10, 2011 at 22:36

Jasper

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1 Comment

Nicolaesse Over a year ago

That's good if I'll use the echo instead of using the json_encode...thanks everybody for the answers!

artlung · Accepted Answer · 2011-11-10 23:15:16Z

-1

<?php

$json = '{ "label": "man", "data":[["0","1.13"], ["1","1.38"], ["2","1.87"], ["3","1.12"], ["4","1.28"]]}';

$structure = json_decode($json, true);
$newData = $structure['data'];

for ($x=0;$x<count($newData);$x++):
    for ($i=0;$i<count($newData[$i]);$i++):
        $newData[$x][$i] = (float)$newData[$x][$i];
    endfor;
endfor;

$structure['data'] = $newData;
print json_encode($structure);

New Result:

{"label":"man","data":[[0,1.13],[1,1.38],[2,1.87],[3,1.12],[4,1.28]]}

edited Nov 10, 2011 at 23:15

answered Nov 10, 2011 at 22:49

artlung

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