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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#op fetchextreturn operands
60 ADD_STRING   ~0 'hello'
 1 ADD_VAR   ~0 ~0,!0
 2 ADD_STRING   ~0 ~0,'+world'
 3 ECHO     ~0
74 RETURN     1

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