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scaleFormat() method doesn't handle class-method callbacks 
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Joined: Thu May 10, 2012 10:25 pm
Posts: 3
Location: Melbourne, Australia
Post scaleFormat() method doesn't handle class-method callbacks
I'm using AXIS_FORMAT_CUSTOM to generate y-axis labels, and want to use a class' method, rather than an isolated function. Currently, this doesn't work.

I've isolated the problem to pDraw::scaleFormat(), which performs a function_exists check on the callback function provided before executing it using call_user_func (see line 3134). I've managed to get by this by extending pImage and overriding scaleFormat, but this should be updated in the core, in my humble opinion :)

The following would provide an adequate check for class methods:

if ( $Mode == AXIS_FORMAT_CUSTOM ) {
    if ( function_exists($Format) || is_array($Format) && method_exists($Format[0], $Format[1]) ) {
        return( call_user_func($Format,$Value) );


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Thu May 17, 2012 2:36 am
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