Convert php array to csv string

Question

I have several method to transform php array to csv string both from stackoverflow and google. But I am in trouble that if I want to store mobile number such as 01727499452,

Answer 1

Here is a solution that is a little more general purpose. I was actually looking for a way to make string lists for SQL bulk inserts. The code would look like this:

foreach ($rows as $row) {
    $string = toDelimitedString($row);
    // Now append it to a file, add line break, whatever the need may be
}

And here is the useful function that I ended up adding to my tookit:

/**
 * Convert an array of strings to a delimited string. This function supports CSV as well as SQL output since
 * the quote character is customisable and the escaping behaviour is the same for CSV and SQL.
 *
 * Tests:
 *  echo toDelimitedString([], ',', '\'', true) . "\n";
 *  echo toDelimitedString(['A'], ',', '\'', true) . "\n";
 *  echo toDelimitedString(['A', 'B'], ',', '\'', true) . "\n";
 *  echo toDelimitedString(['A', 'B\'C'], ',', '\'', true) . "\n";
 *  echo toDelimitedString([], ',', '\'', true) . "\n";
 *  echo toDelimitedString(['A'], ',', '"', true) . "\n";
 *  echo toDelimitedString(['A', 'B'], ',', '"', true) . "\n";
 *  echo toDelimitedString(['A', 'B"C'], ',', '"', true) . "\n";
 *
 * Outputs:
 *  
 *  'A'
 *  'A','B'
 *  'A','B''C'
 *  
 *  "A"
 *  "A","B"
 *  "A","B""C"
 *
 * @param array $array A one-dimensional array of string literals
 * @param string $delimiter The character to separate string parts
 * @param string $quoteChar The optional quote character to surround strings with
 * @param bool $escape Flag to indicate whether instances of the quote character should be escaped
 * @return string
 */
function toDelimitedString(array $array, string $delimiter = ',', string $quoteChar = '"', bool $escape = true)
{
    // Escape the quote character, since it is somewhat expensive it can be suppressed
    if ($escape && !empty($quoteChar)) {
        $array = str_replace($quoteChar, $quoteChar . $quoteChar, $array);
    }

    // Put quotes and commas between all the values
    $values = implode($array, $quoteChar . $delimiter . $quoteChar);

    // Put first and last quote around the list, but only if it is not empty
    if (strlen($values) > 0) {
        $values = $quoteChar . $values . $quoteChar;
    }

    return $values;
}