ADD_VAR

PHP code

<?php
/*
 * add contents of variable in value2 to string value1 and store in result
 * opcode number: 56
 */
echo "hello$a world";
?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$a

line#opfetchextreturnoperands
60ADD_STRING  ~0'hello'
 1ADD_VAR  ~0~0,!0
 2ADD_STRING  ~0~0,'+world'
 3ECHO   ~0
74RETURN   1