3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php if (!defined('JSON_UNESCAPED_UNICODE')) { define('JSON_UNESCAPED_SLASHES', 64); define('JSON_UNESCAPED_UNICODE', 256); } $original = 'foo/bar'; $q = array('query_string' => escapeTerm($original)); $j = json_encode($q); var_dump($j); function escapeTerm($term) { $result = $term; // \ escaping has to be first, otherwise escaped later once again $chars = array('\\', '+', '-', '&&', '||', '!', '(', ')', '{', '}', '[', ']', '^', '"', '~', '*', '?', ':', '/'); foreach ($chars as $char) { $result = str_replace($char, '\\' . $char, $result); } return $result; }
based on YYd4F
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(29) "{"query_string":"foo\\\/bar"}"
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/5gE31 on line 10
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/5gE31 on line 10
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/5gE31 on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/5gE31 on line 10