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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1, 2); $b = array(&$a); $a[] = $b; var_dump(json_encode($a)); //echo json_last_error_msg();
based on Ysknc
Output for 5.5.0 - 7.1.0
bool(false)
Output for 5.2.0 - 5.4.45
Warning: json_encode(): recursion detected in /in/lOZTU on line 8 string(18) "[1,2,[[1,2,null]]]"
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/lOZTU on line 8
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/lOZTU on line 9
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/lOZTU on line 8
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/lOZTU on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/lOZTU on line 8