How to get the source code of a method/function call?

[seaside]

Currently, I use this call

traceVariable( $_SERVER['PHP_SELF'], '$_SERVER["PHP_SELF"]' );

to pass a variable by reference to 'traceVariable' and by value a
description string.

Since the description string is very likely to be identical to the
source code (string) of the first parameter, I'd like to write this:

traceVariable( $_SERVER['PHP_SELF'] );

Any ideas, how to get the literal expression (source) of a parameter,
which got passed to a method/function?

[Andy Hassall]

Re: How to get the source code of a method/function call?

On 16 Dec 2006 15:23:19 -0800, "seaside" <seaside.ki@mac .comwrote:

>Currently, I use this call
>
traceVariable( $_SERVER['PHP_SELF'], '$_SERVER["PHP_SELF"]' );
>
>to pass a variable by reference to 'traceVariable' and by value a
>description string.
>
>Since the description string is very likely to be identical to the
>source code (string) of the first parameter, I'd like to write this:
>
traceVariable( $_SERVER['PHP_SELF'] );
>
>Any ideas, how to get the literal expression (source) of a parameter,
>which got passed to a method/function?

See the thread "Easy question, return variable name" from just 2 days ago.

--
Andy Hassall :: andy@andyh.co.u k :: http://www.andyh.co.uk
http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool

[seaside]

Re: How to get the source code of a method/function call?


Andy Hassall schrieb:

On 16 Dec 2006 15:23:19 -0800, "seaside" <seaside.ki@mac .comwrote:
>

Since the description string is very likely to be identical to the
source code (string) of the first parameter, I'd like to write this:

traceVariable( $_SERVER['PHP_SELF'] );

Any ideas, how to get the literal expression (source) of a parameter,
which got passed to a method/function?

>
See the thread "Easy question, return variable name" from just 2 days ago.

Ok, no standard method available. Then, I'll use backtrace to construct
'something'.

[Dikkie Dik]

Re: How to get the source code of a method/function call?

You can use the eval function to go the other way around (not tested):

function traceVariable($ name)
{echo $name . ' = ' . var_export(eval ('return ' . $name), TRUE);}

You'd call it with traceVariable(' $_SERVER[\'PHP_SELF\']');


seaside wrote:

Andy Hassall schrieb:
>

>On 16 Dec 2006 15:23:19 -0800, "seaside" <seaside.ki@mac .comwrote:
>>

>>Since the description string is very likely to be identical to the
>>source code (string) of the first parameter, I'd like to write this:
>>>
>> traceVariable( $_SERVER['PHP_SELF'] );
>>>
>>Any ideas, how to get the literal expression (source) of a parameter,
>>which got passed to a method/function?

> See the thread "Easy question, return variable name" from just 2 days ago.

>
Ok, no standard method available. Then, I'll use backtrace to construct
'something'.
>

[seaside]

Re: How to get the source code of a method/function call?


Dikkie Dik schrieb:

You can use the eval function to go the other way around (not tested):
>
function traceVariable($ name)
{echo $name . ' = ' . var_export(eval ('return ' . $name), TRUE);}
>
You'd call it with traceVariable(' $_SERVER[\'PHP_SELF\']');

Hey, nice idea!

If PHP had a preprocessor, I could even prepare a #define() macro,
which
passes the passed literla-string and its expression along.
Unfortunately, I don't
know of any.