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

Since it's a CSV and not something like JSON, everything is going to be read as a string anyway so just convert your number to a string with:

• (string)$variable
• strval($variable) (which I would prefer here)
• concatenate with an empty string like $variable . ''

PHP's gettype() would also be an option. You can type cast every field to a string (even if it already is one) by using one of the methods I described or you can call out just the number field you're after by doing this:

if (gettype($field) == 'integer' || gettype($field) == 'double') {
    $field = strval($field); // Change $field to string if it's a numeric type
}

Here's the full code with it added

function arrayToCsv( array $fields, $delimiter = ';', $enclosure = '"', $encloseAll = false, $nullToMysqlNull = false ) {
    $delimiter_esc = preg_quote($delimiter, '/');
    $enclosure_esc = preg_quote($enclosure, '/');

    $outputString = "";
    foreach($fields as $tempFields) {
        $output = array();
        foreach ( $tempFields as $field ) {
            // ADDITIONS BEGIN HERE
            if (gettype($field) == 'integer' || gettype($field) == 'double') {
                $field = strval($field); // Change $field to string if it's a numeric type
            }
            // ADDITIONS END HERE
            if ($field === null && $nullToMysqlNull) {
                $output[] = 'NULL';
                continue;
            }

            // Enclose fields containing $delimiter, $enclosure or whitespace
            if ( $encloseAll || preg_match( "/(?:${delimiter_esc}|${enclosure_esc}|\s)/", $field ) ) {
                $field = $enclosure . str_replace($enclosure, $enclosure . $enclosure, $field) . $enclosure;
            }
            $output[] = $field." ";
        }
        $outputString .= implode( $delimiter, $output )."\r\n";
    }
    return $outputString; 
}