[PHP-NOTES] note 130234 added to language.types.string

<?php
function doubleQuote($str) {
    $ret = '"';
    for ($i = 0, $l = strlen($str); $i < $l; ++$i) {
        $o = ord($str[$i]);
        if ($o < 31 || $o > 126) {
            switch ($o) {
                case 9: $ret .= '\t'; break;
                case 10: $ret .= '\n'; break;
                case 11: $ret .= '\v'; break;
                case 12: $ret .= '\f'; break;
                case 13: $ret .= '\r'; break;
                default: $ret .= '\x' . str_pad(dechex($o), 2, '0', STR_PAD_LEFT);
            }
        } else {
            switch ($o) {
                case 36: $ret .= '\$'; break;
                case 34: $ret .= '\"'; break;
                case 92: $ret .= '\\\\'; break;
                default: $ret .= $str[$i];
            }
        }
    }
    return $ret . '"';
}
?>
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Server IP: 45.112.84.4
Probable Submitter: 80.90.5.137 (proxied: 103.49.146.86)
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Manual Page -- https://php.net/manual/en/language.types.string.php
Edit        -- https://main.php.net/note/edit/130234
Del: integrated  -- https://main.php.net/note/delete/130234/integrated
Del: useless     -- https://main.php.net/note/delete/130234/useless
Del: bad code    -- https://main.php.net/note/delete/130234/bad+code
Del: spam        -- https://main.php.net/note/delete/130234/spam
Del: non-english -- https://main.php.net/note/delete/130234/non-english
Del: in docs     -- https://main.php.net/note/delete/130234/in+docs
Del: other reasons-- https://main.php.net/note/delete/130234
Reject      -- https://main.php.net/note/reject/130234
Search      -- https://main.php.net/manage/user-notes.php