3v4l.org

run code in 300+ PHP versions simultaneously
<?php $values = array('', ' ', 'TRUE', ' true '); foreach ($values as $val) { var_dump(json_decode($val)); var_dump(json_last_error()); var_dump(PHP_VERSION_ID >= 50500 ? json_last_error_msg() : NULL); }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
NULL int(4) string(12) "Syntax error" NULL int(4) string(12) "Syntax error" NULL int(4) string(12) "Syntax error" bool(true) int(0) string(8) "No error"
Output for 5.6.8 - 5.6.28
NULL int(0) string(8) "No error" NULL int(4) string(12) "Syntax error" NULL int(4) string(12) "Syntax error" bool(true) int(0) string(8) "No error"
Output for 5.5.24 - 5.5.35
NULL int(0) string(8) "No error" NULL int(4) string(12) "Syntax error" bool(true) int(0) string(8) "No error" bool(true) int(0) string(8) "No error"
Output for 5.4.23 - 5.4.45
NULL int(0) NULL NULL int(4) NULL bool(true) int(0) NULL bool(true) int(0) NULL
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.22
NULL int(0) NULL NULL int(4) NULL bool(true) int(0) NULL NULL int(4) NULL
Output for 5.2.0 - 5.2.17
NULL Fatal error: Call to undefined function json_last_error() in /in/R5T5c on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Call to undefined function json_decode() in /in/R5T5c on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_decode() in /in/R5T5c on line 4
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_decode() in /in/R5T5c on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_decode() in /in/R5T5c on line 4
preferences:
238.29 ms | 401 KiB | 341 Q