CODEWITHSUNDEEP
phpjsonregex
Daryl Lukas
Daryl Lukas

Reputation: 155

PHP Add double quotes before and after numbers in json string

I'm trying to add double quotes to numbers in a json string. For example:

{"id":1, "result": 288230376201306378}

Should be:

{"id":1, "result": "288230376201306378"}

How do I achieve this? I read somewhere that I'm supposed to use regular expressions. Unfortunately, I'm kinda new to that.

Also, I would be very grateful if you could point me to some online resources which would help me understand regex.

Thanks.

Upvotes: 1

Views: 1553

Answers (1)

FrancoisBaveye
FrancoisBaveye

Reputation: 1902

{"id":1, "result": 288230376201306378}

The id is also a number, if you want to modify it too, use :

$myJsonString = '{"id":1, "result": 288230376201306378}';

$myNewJsonString = preg_replace('/"([^"]+)":\s*(\d+)/', '"\1": "\2"', $myJsonString);

If you only want to modify the result use : 

$myJsonString = '{"id":1, "result": 288230376201306378}';

$myNewJsonString = preg_replace('/"result"\s*:\s*(\d+)/', '"result": "\1"', $myJsonString);

For your question about regex, there are many tutorials on internet. I personally use regex101 to test my regex in real time (there is also a "quick reference", which summarize the main tokens used in regex).

Since regex are not an optimal solution in this case, you can cast your numbers into string before adding them to your array (string)$myNumber. The numbers will be considered as strings and quotes will be added when you json_encode the whole data.

Upvotes: 2

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