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<?php |
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namespace Anavel\Crud\Services\Export; |
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class Csv |
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{ |
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private $fp; |
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private $headers = []; |
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private $csv = ''; |
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public function fromArray(array $data) |
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{ |
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if (empty($data)) { |
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return ''; |
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} |
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$this->open(); |
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foreach ($data as $line) { |
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$this->headers($line); |
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} |
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$this->write($this->headers); |
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$fill = array_fill_keys($this->headers, ''); |
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foreach ($data as $line) { |
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$this->write(array_merge($fill, $this->line($line))); |
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} |
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$this->close(); |
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return $this; |
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} |
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public function __toString() |
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{ |
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return $this->csv; |
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} |
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private function open() |
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{ |
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// Use memory as file |
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$this->fp = fopen('php://memory', 'w'); |
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// Add BOM to fix UTF-8 in Excel |
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fwrite($this->fp, chr(0xEF).chr(0xBB).chr(0xBF)); |
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} |
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private function write(array $data) |
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{ |
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fputcsv($this->fp, $data); |
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} |
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private function close() |
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{ |
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rewind($this->fp); |
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$this->csv = stream_get_contents($this->fp); |
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fclose($this->fp); |
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} |
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private function headers(array $data, $prefix = null) |
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{ |
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$prefix = $prefix ? ($prefix.'.') : ''; |
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foreach ($data as $key => $value) { |
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$key = $prefix.$key; |
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if ($this->existsHeader($key)) { |
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continue; |
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} |
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$isArray = is_array($value); |
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if ($isArray && array_key_exists(0, $value)) { |
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continue; |
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} |
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if ($isArray) { |
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$this->headers($value, $key); |
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} elseif ($this->isValidHeader($key)) { |
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$this->headers[] = $key; |
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} |
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} |
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} |
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private function line(array $line, $prefix = null) |
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{ |
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$data = []; |
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$prefix = $prefix ? ($prefix.'.') : ''; |
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foreach ($line as $key => $value) { |
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$key = $prefix.$key; |
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$isArray = is_array($value); |
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if ($isArray && array_key_exists(0, $value)) { |
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continue; |
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} |
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if ($isArray) { |
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$data = array_merge($data, $this->line($value, $key)); |
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} elseif ($this->existsHeader($key)) { |
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$data[$key] = trim(str_replace(["\n", "\r"], '', $value)); |
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} |
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} |
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return $data; |
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} |
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private function isValidHeader($key) |
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{ |
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return preg_match('/_id$/', $key) === 0; |
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} |
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private function existsHeader($key) |
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{ |
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return in_array($key, $this->headers, true); |
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} |
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} |
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anavel /
crud
