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gyro/core/lib/helpers/string_impl/string.php.cls.php

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<?php
/**
 * String class using php functions
 */
class StringPHP {
        /**
         * Check if given string matches current encoding
         * 
         * @param string $value Value to check
         * @param string $encoding Encoding to check against. Use FALSE for current encoding
         * @return bool
         * 
         * @attention This will work with MBString onyl!
         */
        public function check_encoding($value, $encoding = false) {
                return true; 
        }
        
        /**
         * Convert input to current charset
         * 
         * @param string $value Input to convert
         * @return string 
         */
        public function convert($value, $from = false, $to = false) {
                if (empty($to)) { $to = GyroLocale::get_charset(); }
                
                $ret = $value;
                if (!empty($from) && function_exists('iconv')) {
                        $ret = iconv($from, $to . '//IGNORE', $value);
                }
                return $ret;
        }       
        
        /**
         * Character set aware strtolower()
         * 
         * @param String Value to convert into lowercase
         * 
         * @return String converted string
         */
        public function to_lower($val) {
                return strtolower($val);
        }       
        
        /**
         * Character set aware strtoupper()
         * 
         * @param String Value to convert into upper case
         * 
         * @return String converted string
         */
        public function to_upper($val) {
                return strtoupper($val);
        }
        
        /**
         * Character set aware strlen()
         */
        public function length($val) {
                return strlen($val);
        }

        public function strpos($haystack, $needle, $offset = NULL) {
                return strpos($haystack, $needle, $offset);
        }

        public function stripos($haystack, $needle, $offset = NULL) {
                return stripos($haystack, $needle, $offset);
        }

        public function strrpos($haystack, $needle) {
                if ($haystack == '') {
                        return false;
                }
                return strrpos($haystack, $needle);
        }

        /**
         * Character set aware substr
         */
        public function substr($val, $start = 0, $length = NULL) {
                if ($length === NULL) {
                        $length = $this->length($val);
                }
                return substr($val, $start, $length);
        }
}

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