With certain inputs, the line $text = preg_replace_callback($this->callbackSearch, array($this, 'pregCallback'), $text); in Html2Text::converter() fails, setting the $text variable to null and causing the next line, strip_tags(), to throw an exception. When inserting var_dump(preg_last_error_message()) between the two lines, you get the message "Backtrack limit exhausted."
The particular HTML input that triggered this in my case contained a base 64 image.
With certain inputs, the line
$text = preg_replace_callback($this->callbackSearch, array($this, 'pregCallback'), $text);inHtml2Text::converter()fails, setting the$textvariable tonulland causing the next line,strip_tags(), to throw an exception. When insertingvar_dump(preg_last_error_message())between the two lines, you get the message "Backtrack limit exhausted."The particular HTML input that triggered this in my case contained a base 64 image.