regex - Proper validation of the Name entered by a user -


i trying validate name entered user. need make sure name entered 'literally' valid. tried many regular expressions within limited knowledge, none of them seem work fully. example /^[^.'-]+([a-za-z]+|[ .'-]{1})$/

since php website i'm working on, in english, english names allowed. rules applicable filtering name are:

  1. a name may contain of these characters: [a-za-z .'-]
  2. the name may start alphabet or apostrophe
  3. any of characters in [ .'-] may not occur more once in stretch, ie., no '---' or '--'
  4. a space should not follow - or ' nor come before . or -

can please provide proper regular expression implement these?

here's regex solve problem (demo @ regex101):

/^(?!.*(''| |--|- |' | \.| -|\.\.|\n))['a-z][- '.a-z]*$/gi

breakdown:

(?!.*(''| |--|- |' | \.| -|\.\.|\n)) negative lookahead ensure no doubled characters found

['a-z] start 1 of these characters

[- '.a-z]* rest can include spaces , dashes, , not required (* instead of +)


Comments

Post a Comment

Popular posts from this blog

Magento/PHP - Get phones on all members in a customer group -

i working on custom magento extension. working around adminhtml part , i've created custom form there. here form code: <?php class vivasindustries_smsnotification_block_adminhtml_sms_sendmass_edit_form extends mage_adminhtml_block_widget_form { public function _preparelayout() { $extensionpath = mage::getmoduledir('js', 'vivasindustries_smsnotification'); $head = $this->getlayout()->getblock('head'); $head->addjs('jquery.js'); $head->addjs('vivas.js'); return parent::_preparelayout(); } protected function _prepareform() { $form = new varien_data_form(array( 'id' => 'edit_form', 'action' => $this->geturl('*/*/save', array('id' => $this->getrequest()->get...
Read more

php - Bypass Geo Redirect for specific directories -

i'm trying bypass redirect specific url within site. wondering if might able help. the code below code use, original urls replaces example.com i'd able access http://example.com/admin without redirect occuring. is there way this, , there way using own ip? function country_geo_redirect() { $country = getenv('http_geoip_country_code'); if ($country == "us" ) { wp_redirect("http://usa.example.com/"); exit; } else if ($country == "gb" ) { wp_redirect("http://uk.example.com/"); exit; } } add_action('init', 'country_geo_redirect'); you can bypass redirection code if server found ip address. if ip address == <my ip address> ' nothing here else country_georedirect() end if
Read more

php - .htaccess mod_rewrite for dynamic url which has domain names -

i want convert url ex:( example.com/link.php?url=facebook.com ) ( example.com/facebook.com.php ) how can using .htaccess. or there other process make job easier ? i tried adding script .htaccess file options +followsymlinks rewriteengine on rewriterule url-(.*)\.htm$ link.php?url=$1 but converting url adding "url-" ( example.com/url-facebook.com.php ) i want remove "url-" , want make ( example.com/facebook.com.php ) rewriteengine on rewritecond %{the_request} ^get.*link\.php\?url\= [nc] rewritecond %{request_uri} !/system/.* [nc] rewriterule (.*?)link\.php\?url\=/*(.*) /$1$2 [r=301,ne,l] not sure how above work edit of used use remove index.php url
Read more