---
title: 'You can check if a string contains JSON by decoding it, encoding it again, and comparing the value with the original'
tweet_id: '1454133800888410119'
thread_slug: weekly-thread-2021-44
author_username: freekmurze
images:
    - 'https://pbs.twimg.com/media/FC4Bs0lXEA4WV-P.jpg'
created_at: 2021-10-29T17:11:29+00:00
slug: you-can-check-if-a-string-contains-json-by-decoding-it-encoding-it-again-and-comparing-the-value-with-the-original
---
🔥 A way to check if a string contains valid JSON: just decode it,  encode it again, and check if it matches the original value
#php