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<?php |
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/** |
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* This file is part of Blitz PHP framework. |
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* |
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* (c) 2022 Dimitri Sitchet Tomkeu <[email protected]> |
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* |
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* For the full copyright and license information, please view |
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* the LICENSE file that was distributed with this source code. |
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*/ |
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namespace BlitzPHP\Formatter; |
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/** |
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* Formateur de données en CSV |
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* |
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* @see http://www.metashock.de/2014/02/create-csv-file-in-memory-php/ |
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*/ |
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class CsvFormatter implements FormatterInterface |
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{ |
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/** |
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* Délimiteur de champ (un seul caractère) |
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*/ |
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private string $delimiter = ','; |
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/** |
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* Encadrement du champ (un seul caractère). |
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*/ |
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private string $enclosure = '"'; |
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/** |
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* {@inheritDoc} |
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* |
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* @return string|null Une chaine formatée en CSV |
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*/ |
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public function format($data) |
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{ |
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// Utiliser un seuil de 1 Mo (1024 * 1024) |
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$handle = fopen('php://temp/maxmemory:1048576', 'wb'); |
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if ($handle === false) { |
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return null; |
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} |
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if (! is_array($data)) { |
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$data = (array) $data; |
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} |
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// Vérifie s'il s'agit d'un tableau multidimensionnel |
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if (isset($data[0]) && count($data) !== count($data, COUNT_RECURSIVE)) { |
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$headings = array_keys($data[0]); |
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} else { |
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$headings = array_keys($data); |
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$data = [$data]; |
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} |
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// Appliquer les en-têtes |
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fputcsv($handle, $headings, $this->delimiter, $this->enclosure); |
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foreach ($data as $record) { |
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// Si l'enregistrement n'est pas un tableau, alors break. |
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// C'est parce que le 2ème paramètre de fputcsv() doit être un tableau |
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if (! is_array($record)) { |
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break; |
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} |
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// Suppression de la notification "conversion de tableau en chaîne". |
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// Gardez le "mal" @ ici. |
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$record = @array_map('strval', $record); |
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fputcsv($handle, $record, $this->delimiter, $this->enclosure); |
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} |
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rewind($handle); |
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$csv = stream_get_contents($handle); |
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fclose($handle); |
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// Convertit l'encodage UTF-8 en UTF-16LE qui est pris en charge par MS Excel |
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return mb_convert_encoding($csv, 'UTF-16LE', 'UTF-8'); |
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} |
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/** |
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* {@inheritDoc} |
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* |
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* @param string $data Chaine CSV |
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* |
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* @return array A multi-dimensional array with the outer array being the number of rows |
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* and the inner arrays the individual fields |
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*/ |
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public function parse(string $data): array |
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{ |
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$array = []; |
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$lines = explode("\n", trim($data)); |
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foreach ($lines as $line) { |
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$array[] = str_getcsv($line, $this->delimiter, $this->enclosure); |
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} |
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$head = array_shift($array); |
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if ($array === []) { |
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return $head; |
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} |
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$result = []; |
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foreach ($array as $values) { |
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$result[] = array_combine($head, $values); |
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} |
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return $result; |
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} |
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/** |
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* Recupère le délimiteur de champ |
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*/ |
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public function getDelimiter(): string |
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{ |
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return $this->delimiter; |
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} |
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/** |
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* Définit le délimiteur de champ |
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*/ |
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public function setDelimiter(string $delimiter): self |
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{ |
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$this->delimiter = $delimiter[0] ?? ','; |
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return $this; |
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} |
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/** |
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* Recupère l'encadrement du champ (un seul caractère). |
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*/ |
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public function getEnclosure(): string |
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{ |
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return $this->enclosure; |
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} |
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/** |
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* Set définit l'encadrement du champ (un seul caractère). |
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*/ |
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public function setEnclosure(string $enclosure): self |
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{ |
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$this->enclosure = $enclosure[0] ?? '"'; |
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return $this; |
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} |
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} |
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blitz-php /
framework
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