woocommerce/classes/class-wc-validation.php

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<?php
/**
* Contains Validation functions
*
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* @class WC_Validation
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* @version 1.6.4
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* @package WooCommerce/Classes
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* @author WooThemes
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*/
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class WC_Validation {
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/**
* Validates an email using wordpress native is_email function
*
* @param string email address
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* @return bool
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*/
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function is_email( $email ) {
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return is_email( $email );
}
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/**
* Validates a phone number using a regular expression
*
* @param string phone number
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* @return bool
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*/
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function is_phone( $phone ) {
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if ( strlen( trim( preg_replace( '/[\s\#0-9_\-\+\(\)]/', '', $phone ) ) ) > 0 )
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return false;
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return true;
}
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/**
* Checks for a valid postcode (UK)
*
* @param string postcode
* @param string country
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* @return bool
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*/
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function is_postcode( $postcode, $country ) {
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if ( strlen( trim( preg_replace( '/[\s\-A-Za-z0-9]/', '', $postcode ) ) ) > 0 )
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return false;
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switch ( $country ) {
case "GB" :
return $this->is_GB_postcode( $postcode );
case "US" :
if ( preg_match( "/^([0-9]{5})(-[0-9]{4})?$/i", $postcode ) )
return true;
else
return false;
}
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return true;
}
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/**
* is_GB_postcode function.
*
* @author John Gardner
* @access public
* @param mixed $toCheck A postcode
* @return bool
*/
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function is_GB_postcode( $toCheck ) {
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// Permitted letters depend upon their position in the postcode.
$alpha1 = "[abcdefghijklmnoprstuwyz]"; // Character 1
$alpha2 = "[abcdefghklmnopqrstuvwxy]"; // Character 2
$alpha3 = "[abcdefghjkstuw]"; // Character 3
$alpha4 = "[abehmnprvwxy]"; // Character 4
$alpha5 = "[abdefghjlnpqrstuwxyz]"; // Character 5
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// Expression for postcodes: AN NAA, ANN NAA, AAN NAA, and AANN NAA
$pcexp[0] = '^('.$alpha1.'{1}'.$alpha2.'{0,1}[0-9]{1,2})([0-9]{1}'.$alpha5.'{2})$';
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// Expression for postcodes: ANA NAA
$pcexp[1] = '^('.$alpha1.'{1}[0-9]{1}'.$alpha3.'{1})([0-9]{1}'.$alpha5.'{2})$';
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// Expression for postcodes: AANA NAA
$pcexp[2] = '^('.$alpha1.'{1}'.$alpha2.'[0-9]{1}'.$alpha4.')([0-9]{1}'.$alpha5.'{2})$';
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// Exception for the special postcode GIR 0AA
$pcexp[3] = '^(gir)(0aa)$';
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// Standard BFPO numbers
$pcexp[4] = '^(bfpo)([0-9]{1,4})$';
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// c/o BFPO numbers
$pcexp[5] = '^(bfpo)(c\/o[0-9]{1,3})$';
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// Load up the string to check, converting into lowercase and removing spaces
$postcode = strtolower($toCheck);
$postcode = str_replace (' ', '', $postcode);
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// Assume we are not going to find a valid postcode
$valid = false;
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// Check the string against the six types of postcodes
foreach ($pcexp as $regexp) {
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if (ereg($regexp,$postcode, $matches)) {
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// Load new postcode back into the form element
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$toCheck = strtoupper ($matches[1] . ' ' . $matches [2]);
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// Take account of the special BFPO c/o format
$toCheck = str_replace( 'C/O', 'c/o ', $toCheck );
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// Remember that we have found that the code is valid and break from loop
$valid = true;
break;
}
}
if ($valid){return true;} else {return false;};
}
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/**
* Format the postcode according to the country and length of the postcode
*
* @param string postcode
* @param string country
* @return string formatted postcode
*/
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function format_postcode( $postcode, $country ) {
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$postcode = strtoupper(trim($postcode));
$postcode = trim(preg_replace('/[\s]/', '', $postcode));
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if ( in_array( $country, array('GB', 'CA') ) ) :
$postcode = trim( substr_replace( $postcode, ' ', -3, 0 ) );
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endif;
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return $postcode;
}
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/**
* format_phone function.
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*
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* @access public
* @param mixed $tel
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* @return string
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*/
function format_phone( $tel ) {
$tel = str_replace( '.', '-', $tel );
return $tel;
}
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}