3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php //Source: https://bugs.php.net/bug.php?id=63898 $key = "Foo " . chr(163); $array = array($key => ""); var_dump($array); $json = json_encode($array); var_dump($json); $array2 = array($key); var_dump($array2, json_encode($array2)); var_dump(json_encode('hey now you’re dumb')); /* $x = 'Audio Pass: Get live NFL game audio while you’re on the road with Audio Pass.'; var_dump(htmlentities($x)); var_dump(htmlentities($x, ENT_COMPAT | ENT_SUBSTITUTE, 'ISO-8859-1')); var_dump(htmlentities($x, ENT_COMPAT | ENT_SUBSTITUTE, 'UTF-8')); */
based on uZpUj
Output for 5.5.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(1) { ["Foo �"]=> string(0) "" } bool(false) array(1) { [0]=> string(5) "Foo �" } bool(false) string(26) ""hey now you\u2019re dumb""
Output for 5.2.7 - 5.3.13, 5.3.15 - 5.4.45
array(1) { ["Foo �"]=> string(0) "" } string(9) "{null:""}" array(1) { [0]=> string(5) "Foo �" } string(6) "[null]" string(26) ""hey now you\u2019re dumb""
Output for 5.3.14
array(1) { ["Foo �"]=> string(0) "" } Warning: json_encode(): Invalid UTF-8 sequence in argument in /in/EhILk on line 8 bool(false) Warning: json_encode(): Invalid UTF-8 sequence in argument in /in/EhILk on line 13 array(1) { [0]=> string(5) "Foo �" } bool(false) string(26) ""hey now you\u2019re dumb""
Output for 5.2.0 - 5.2.6
array(1) { ["Foo �"]=> string(0) "" } string(11) "{"Foo ":""}" array(1) { [0]=> string(5) "Foo �" } string(8) "["Foo "]" string(26) ""hey now you\u2019re dumb""
Output for 5.0.0 - 5.1.6
array(1) { ["Foo �"]=> string(0) "" } Fatal error: Call to undefined function json_encode() in /in/EhILk on line 8
Process exited with code 255.
Output for 4.4.5 - 4.4.9
array(1) { ["Foo �"]=> string(0) "" } Fatal error: Call to undefined function: json_encode() in /in/EhILk on line 8
Process exited with code 255.
Output for 4.3.2 - 4.4.4
array(1) { ["Foo �"]=> string(0) "" } Fatal error: Call to undefined function: json_encode() in /in/EhILk on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1
array(1) { ["Foo �"]=> string(0) "" } Fatal error: Call to undefined function: json_encode() in /in/EhILk on line 8