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<?php |
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use Illuminate\Support\Str; |
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if (! function_exists('unique_random')) { |
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/** |
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* Generate a unique random string of characters |
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* uses str_random() helper for generating the random string. |
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* |
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* @param $table - name of the table |
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* @param $col - name of the column that needs to be tested |
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* @param int $chars - length of the random string |
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* |
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* @return string |
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*/ |
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function unique_random($table, $col, $chars = 16) |
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{ |
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$unique = false; |
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// Store tested results in array to not test them again |
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$tested = []; |
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do { |
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// Generate random string of characters |
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$random = Str::random($chars); |
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// Check if it's already testing |
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// If so, don't query the database again |
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if (in_array($random, $tested)) { |
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continue; |
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} |
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// Check if it is unique in the database |
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$count = DB::table($table)->where($col, '=', $random)->count(); |
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// Store the random character in the tested array |
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// To keep track which ones are already tested |
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$tested[] = $random; |
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// String appears to be unique |
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if ($count == 0) { |
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// Set unique to true to break the loop |
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$unique = true; |
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} |
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// If unique is still false at this point |
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// it will just repeat all the steps until |
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// it has generated a random string of characters |
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} while (! $unique); |
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return $random; |
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} |
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} |
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if (! function_exists('readCSV')) { |
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function readCSV($filename = '', $delimiter = ',') |
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{ |
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// Read the file |
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$file = fopen($filename, 'r'); |
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// Iterate over it to get every line |
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while (($line = fgetcsv($file)) !== false) { |
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// Store every line in an array |
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$data[] = $line; |
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} |
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fclose($file); |
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return $data; |
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} |
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} |
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if (! function_exists('writeCSV')) { |
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function writeCSV($filename = '', $data = []) |
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{ |
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$file = fopen($filename, 'w'); |
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// Write remaining lines to file |
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foreach ($data as $fields) { |
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fputcsv($file, $fields); |
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} |
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fclose($file); |
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} |
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} |
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familytree365 /
backend
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