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# PEAR_ErrorStack::setContextCallback()

PEAR_ErrorStack::setContextCallback() -- Set a callback that generates context information (location of error) for an error stack

## Synopsis

    require_once 'PEAR/ErrorStack.php';

``void PEAR_ErrorStack::setContextCallback` (array|string|null $contextCallback)`

## Description

This method sets the callback that can be used to generate context information for an error. Passing in `NULL` will disable context generation and remove the expensive call to debug_backtrace()

## Parameter

mixed `$contextCallback`

  A valid callback as defined by is_callable()

## Throws

No exceptions thrown.

## Note

This function can not be called statically.

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PEAR_ErrorStack::raiseError() | Up | PEAR_ErrorStack::setDefaultCallback()