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# HTML_QuickForm::isError()

HTML_QuickForm::isError() -- Tells whether a result is an error

## Synopsis

    require_once 'HTML/QuickForm.php';

``bool HTML_QuickForm::isError` (mixed $value)`

## Description

Tells whether a result is an error (i.e. whether `$value` is an instance of HTML_QuickForm_Error).

## Parameter

mixed `$value`

  result of some QuickForm function

## Return value

return whether `$value` is an error

## Throws

throws no exceptions thrown

## Note

This function can be called statically.

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