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PHP parameter passing error


lucerias

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There is an existing class and i tried to display the parameter by adding line like this "echo $parameter" under one function of that class. But it popped out error message like the following. If i add the echo line after class before "?>", the same problem came out also.

Warning: Cannot modify header information - headers already sent by (output started at C:\Apache Group\Apache2\htdocs\PHPCode\Customer.php:2518) in C:\Apache Group\Apache2\htdocs\PHPCode\index.php on line 441

And if i create a function under the class just to display the $parameter, another error message like the following was popped out

Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in C:\Apache Group\Apache2\htdocs\PHPCode\Customer.php on line 2507

Please tell me how to solve it, thank you.
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