Untitled

<?php
$elements = [];
while (FALSE !== ($line = fgets(STDIN))) {
  $elements[] = trim($line);
}

    $intArray = [];
    $floatArray = [];
    $strArray = [];
//    $arr = [$intArray, $floatArray, $strArray];

    foreach ($elements as $key) {
        if ( is_numeric($key) ) {
            $num = (float)$key;
            ( str_contains($key, ".") ) ? array_push($floatArray, $key) : array_push($intArray, $key);
        } else {
            array_push($strArray, $key);
        }
    }

    $printLine = "integers: ";
    sort($intArray);
    foreach ($intArray as $int) {
        $printLine = $printLine.$int.", ";
    }
    echo trim($printLine, ", "). PHP_EOL;

    $printLine = "floats: ";
    sort($floatArray);
    foreach ($floatArray as $float) {
        $printLine = $printLine.$float.", ";
    }
    echo trim($printLine, ", "). PHP_EOL;

    $printLine = "strings: ";
    sort($strArray  );
    foreach ($strArray as $str) {
        $printLine = $printLine.$str.", ";
    }
    echo trim($printLine, ", "). PHP_EOL;

?>