<?php namespace PhpOffice\PhpSpreadsheet\Calculation\TextData; class Trim { /** * CLEAN. * * @param mixed $stringValue String Value to check * * @return null|string */ public static function nonPrintable($stringValue = '') { $stringValue = Helpers::extractString($stringValue); return preg_replace('/[\\x00-\\x1f]/', '', "$stringValue"); } /** * TRIM. * * @param mixed $stringValue String Value to check * * @return string */ public static function spaces($stringValue = '') { $stringValue = Helpers::extractString($stringValue); return trim(preg_replace('/ +/', ' ', trim("$stringValue", ' ')) ?? '', ' '); } }