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 - .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

Website Login Issue developed in magento -

i have website developed using magento . able login. right now, login failed. infact operations interacts user table failing. need know issue. how figure out? first clear try clear log file second make sure have not upgraded magento and 3rd make sure db accessible in magento -harry p
Read more