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<?php |
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namespace JeroenDesloovere\VCard; |
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/* |
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* Copyright 2010 Thomas Schaaf <[email protected]> |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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* Changes by: Wouter Admiraal <[email protected]> |
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* Original code is available at: http://code.google.com/p/zendvcard/ |
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*/ |
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/** |
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* VCard PHP Class to parse .vcard files. |
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* |
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* This class is heavily based on the Zendvcard project (seemingly abandoned), |
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* which is licensed under the Apache 2.0 license. |
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* More information can be found at https://code.google.com/archive/p/zendvcard/ |
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* |
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* @author Thomas Schaaf <[email protected]> |
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* @author ruzicka.jan |
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* @author Wouter Admiraal <[email protected]> |
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*/ |
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class VCardParser |
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{ |
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/** |
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* The raw VCard content. |
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* |
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* @var string |
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*/ |
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protected $content; |
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/** |
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* The VCard data objects. |
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* |
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* @var array |
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*/ |
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protected $vcardObjects; |
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/** |
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* Helper function to parse a file directly. |
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* |
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* @param string $filename |
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* |
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* @return JeroenDesloovere\VCard\VCardParser |
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*/ |
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public static function parseFromFile($filename) |
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{ |
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if (file_exists($filename) && is_readable($filename)) { |
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return new VCardParser(file_get_contents($filename)); |
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} else { |
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throw new \RuntimeException(sprintf("File %s is not readable, or doesn't exist.", $filename)); |
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} |
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} |
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public function __construct($content) |
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{ |
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$this->content = $content; |
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$this->vcardObjects = array(); |
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$this->parse(); |
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} |
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/** |
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* Fetch the imported VCard at the specified index. |
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* |
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* @throws OutOfBoundsException |
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* |
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* @param int $i |
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* |
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* @return stdClass |
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* The card data object. |
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*/ |
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public function getCardAtIndex($i) |
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{ |
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if (isset($this->vcardObjects[$i])) { |
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return $this->vcardObjects[$i]; |
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} |
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throw new \OutOfBoundsException(); |
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} |
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/** |
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* Start the parsing process. |
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* |
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* This method will populate the data object. |
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*/ |
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protected function parse() |
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{ |
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// Normalize new lines. |
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$this->content = str_replace(array("\r\n", "\r"), "\n", $this->content); |
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// RFC2425 5.8.1. Line delimiting and folding |
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// Unfolding is accomplished by regarding CRLF immediately followed by |
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// a white space character (namely HTAB ASCII decimal 9 or. SPACE ASCII |
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// decimal 32) as equivalent to no characters at all (i.e., the CRLF |
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// and single white space character are removed). |
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$this->content = preg_replace("/\n(?:[ \t])/", "", $this->content); |
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$lines = explode("\n", $this->content); |
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// Parse the VCard, line by line. |
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foreach ($lines as $line) { |
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$line = trim($line); |
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if (strtoupper($line) == "BEGIN:VCARD") { |
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$cardData = new \stdClass(); |
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} elseif (strtoupper($line) == "END:VCARD") { |
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$this->vcardObjects[] = $cardData; |
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} elseif (!empty($line)) { |
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$type = ''; |
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$value = ''; |
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@list($type, $value) = explode(':', $line, 2); |
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$types = explode(';', $type); |
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$element = strtoupper($types[0]); |
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array_shift($types); |
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$i = 0; |
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$rawValue = false; |
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foreach ($types as $type) { |
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if (preg_match('/base64/', strtolower($type))) { |
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$value = base64_decode($value); |
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unset($types[$i]); |
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$rawValue = true; |
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} elseif (preg_match('/encoding=b/', strtolower($type))) { |
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$value = base64_decode($value); |
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unset($types[$i]); |
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$rawValue = true; |
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} elseif (preg_match('/quoted-printable/', strtolower($type))) { |
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$value = quoted_printable_decode($value); |
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unset($types[$i]); |
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$rawValue = true; |
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} elseif (strpos(strtolower($type), 'charset=') === 0) { |
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try { |
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$value = mb_convert_encoding($value, "UTF-8", substr($type, 8)); |
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} catch (\Exception $e) { } |
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unset($types[$i]); |
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} |
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$i++; |
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} |
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switch (strtoupper($element)) { |
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case 'FN': |
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$cardData->fullname = $value; |
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break; |
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case 'N': |
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foreach($this->parseName($value) as $key => $val) { |
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$cardData->{$key} = $val; |
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} |
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break; |
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case 'BDAY': |
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$cardData->birthday = $this->parseBirthday($value); |
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break; |
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case 'ADR': |
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if (!isset($cardData->address)) { |
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$cardData->address = array(); |
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} |
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$key = !empty($types) ? implode(';', $types) : 'WORK;POSTAL'; |
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$cardData->address[$key][] = $this->parseAddress($value); |
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break; |
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View Code Duplication |
case 'TEL': |
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if (!isset($cardData->phone)) { |
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$cardData->phone = array(); |
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} |
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$key = !empty($types) ? implode(';', $types) : 'default'; |
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$cardData->phone[$key][] = $value; |
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break; |
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View Code Duplication |
case 'EMAIL': |
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if (!isset($cardData->email)) { |
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$cardData->email = array(); |
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} |
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$key = !empty($types) ? implode(';', $types) : 'default'; |
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$cardData->email[$key][] = $value; |
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break; |
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case 'REV': |
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$cardData->revision = $value; |
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break; |
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case 'VERSION': |
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$cardData->version = $value; |
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break; |
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case 'ORG': |
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$cardData->organization = $value; |
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break; |
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View Code Duplication |
case 'URL': |
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if (!isset($cardData->url)) { |
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$cardData->url = array(); |
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} |
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$key = !empty($types) ? implode(';', $types) : 'default'; |
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$cardData->url[$key][] = $value; |
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break; |
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case 'TITLE': |
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$cardData->title = $value; |
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break; |
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case 'PHOTO': |
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if ($rawValue) { |
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$cardData->rawPhoto = $value; |
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} else { |
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$cardData->photo = $value; |
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} |
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break; |
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} |
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} |
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} |
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} |
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protected function parseName($value) |
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{ |
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@list( |
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$lastname, |
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$firstname, |
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$additional, |
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$prefix, |
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$suffix |
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) = explode(';', $value); |
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return (object) array( |
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'lastname' => $lastname, |
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'firstname' => $firstname, |
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'additional' => $additional, |
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'prefix' => $prefix, |
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'suffix' => $suffix, |
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); |
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} |
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protected function parseBirthday($value) |
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{ |
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return new \DateTime($value); |
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} |
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protected function parseAddress($value) |
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{ |
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@list( |
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$name, |
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$extended, |
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$street, |
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$city, |
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$region, |
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$zip, |
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$country, |
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) = explode(';', $value); |
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return (object) array( |
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'name' => $name, |
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'extended' => $extended, |
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'street' => $street, |
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'city' => $city, |
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'region' => $region, |
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'zip' => $zip, |
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'country' => $country, |
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); |
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} |
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} |
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If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: