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PHP code

 * Initialize a function argument with "value" if not received from caller.  Otherwise same as RECV.
 * opcode number: 64
function hello($a=5){}

PHP opcodes

Function name: (null)

Compiled variables: none

line#op fetchextreturn operands
60 NOP      
71 RETURN     1

Function name: hello

Compiled variables: !0=$a

line#op fetchextreturn operands
60 RECV_INIT     1,5
 1 RETURN     null

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