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<?php ini_set('html_errors', 'ON-ISH'); var_dump($x=ini_get('html_errors'), filter_var($x, FILTER_VALIDATE_BOOLEAN)); trigger_error('ON-ISH'); ini_set('html_errors', 'ON'); var_dump($x=ini_get('html_errors'), filter_var($x, FILTER_VALIDATE_BOOLEAN)); trigger_error('ON');

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