3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(5 => 3, 2 => 8); $b = (object) $a; echo $a->5;
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected '5' (T_LNUMBER), expecting identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$' in /in/K9Nk6 on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '{' or '$' in /in/K9Nk6 on line 5
Process exited with code 255.

preferences:
174.16 ms | 1395 KiB | 53 Q