3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = array('hello' => 'json' . pack("H*" ,'c32e') ); var_dump(json_encode($str)); // $str['test'] = htmlentities( (string) $str['test'], ENT_QUOTES, 'utf-8', FALSE); // $str['hello'] = iconv('UTF-8', 'UTF-8//IGNORE', $str['hello']); $str['hello'] = utf8_encode( $str['hello'] ); var_dump(json_encode($str));
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false) Deprecated: Function utf8_encode() is deprecated in /in/Mrtpt on line 10 string(23) "{"hello":"json\u00c3."}"
Output for 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.5 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
bool(false) string(23) "{"hello":"json\u00c3."}"
Output for 5.2.7 - 5.2.17, 5.3.0 - 5.3.13, 5.3.15 - 5.3.29, 5.4.0 - 5.4.45
string(14) "{"hello":null}" string(23) "{"hello":"json\u00c3."}"
Output for 5.3.14
Warning: json_encode(): Invalid UTF-8 sequence in argument in /in/Mrtpt on line 5 bool(false) string(23) "{"hello":"json\u00c3."}"
Output for 5.2.0 - 5.2.6
string(16) "{"hello":"json"}" string(23) "{"hello":"json\u00c3."}"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/Mrtpt on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/Mrtpt on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/Mrtpt on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/Mrtpt on line 5

preferences:
245.82 ms | 401 KiB | 349 Q