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  1. <?php
  2.  
  3. function isValidJSON($str) {
  4.    json_decode($str);
  5.    return json_last_error() == JSON_ERROR_NONE;
  6. }
  7.  
  8. var_dump(isValidJSON(null));
  9. var_dump(isValidJSON(""));
Success #stdin #stdout 0.01s 52488KB
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stdin
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Standard input is empty
stdout
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bool(true)
bool(true)
https://ideone.com/va3u8U
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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