Internals2/opcodes/add-string-Phpdoc专题
ADD_STRING
PHP code
<?php
/*
* add string value2 to string value2 and store in result
* opcode number: 55
*/
echo "hello$a world";
?>PHP opcodes
Function name: (null)
Compiled variables: !0=$a
| line | # | op | fetch | ext | return | operands |
|---|---|---|---|---|---|---|
| 6 | 0 | ADD_STRING | ~0 | 'hello' | ||
| 1 | ADD_VAR | ~0 | ~0,!0 | |||
| 2 | ADD_STRING | ~0 | ~0,'+world' | |||
| 3 | ECHO | ~0 | ||||
| 7 | 4 | RETURN | 1 |