src/Zend/Locale/Format.php
public static function isNumber($input, array $options = array())
    {
        if (!self::_getUniCodeSupport()) {
            trigger_error("Sorry, your PCRE extension does not support UTF8 which is needed for the I18N core", E_USER_NOTICE);
        }

        $options = self::_checkOptions($options) + self::$_options;

        // Get correct signs for this locale
        $symbols = Zend_Locale_Data::getList($options['locale'],'symbols');

        $regexs = Zend_Locale_Format::_getRegexForType('decimalnumber', $options);
        $regexs = array_merge($regexs, Zend_Locale_Format::_getRegexForType('scientificnumber', $options));
        if (!empty($input) && ($input[0] == $symbols['decimal'])) {
            $input = 0 . $input;
        }
        foreach ($regexs as $regex) {
            preg_match($regex, $input, $found);
            if (isset($found[0])) {
                return true;
            }
        }

        return false;
    }
public static function isNumber($input, array $options = array())
    {
        if (!self::_getUniCodeSupport()) {
            trigger_error("Sorry, your PCRE extension does not support UTF8 which is needed for the I18N core", E_USER_NOTICE);
        }

        $options = self::_checkOptions($options) + self::$_options;

        // Get correct signs for this locale
        $symbols = Zend_Locale_Data::getList($options['locale'],'symbols');

        $regexs = Zend_Locale_Format::_getRegexForType('decimalnumber', $options);
        $regexs = array_merge($regexs, Zend_Locale_Format::_getRegexForType('scientificnumber', $options));
        if (!empty($input) && ($input[0] == $symbols['decimal'])) {
            $input = 0 . $input;
        }
        foreach ($regexs as $regex) {
            preg_match($regex, $input, $found);
            if (isset($found[0])) {
                return true;
            }
        }

        return false;
    }
public static function isNumber ( $ input , array $ options = array ( ) ) { if ( ! self :: _getUniCodeSupport ( ) ) { trigger_error ( "Sorry, your PCRE extension does not support UTF8 which is needed for the I18N core" , E_USER_NOTICE ) ; } $ options = self :: _checkOptions ( $ options ) + self :: $ _options ; // Get correct signs for this locale $ symbols = Zend_Locale_Data :: getList ( $ options [ 'locale' ] , 'symbols' ) ; $ regexs = Zend_Locale_Format :: _getRegexForType ( 'decimalnumber' , $ options ) ; $ regexs = array_merge ( $ regexs , Zend_Locale_Format :: _getRegexForType ( 'scientificnumber' , $ options ) ) ; if ( ! empty ( $ input ) && ( $ input [ 0 ] == $ symbols [ 'decimal' ] ) ) { $ input = 0 . $ input ; } foreach ( $ regexs as $ regex ) { preg_match ( $ regex , $ input , $ found ) ; if ( isset ( $ found [ 0 ] ) ) { return true ; } } return false ; }
Checks if the input contains a normalized or localized number

@param   string  $input    Localized number string
@param   array   $options  Options: locale. See {@link setOptions()} for details.
@return  boolean           Returns true if a number was found
Checks if the input contains a normalized or localized number