Explode String with punctuation.php

<?php
    function explodeArrayFunction($input)
    {
        $array = preg_split('/(\s|[\.,\/])/', $input, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
        return array_values($array);
    }

    function implodeArrayFunction($input)
    {

    	$text = implode('', $input);
		return $text;

    }

    $input  = "This is some sample input, it's not complex. ";
    $input .= "But does contain punctuation such as full stops/back-slashes/etc";
    $array  = explodeArrayFunction($input);

    $testArray = array(
        "This",
        " ",
        "is",
        " ",
        "some",
        " ",
        "sample",
        " ",
        "input",
        ",",
        " ",
        "it's",
        " ",
        "not",
        " ",
        "complex",
        ".",
        " ",
        "But",
        " ",
        "does",
        " ",
        "contain",
        " ",
        "punctuation",
        " ",
        "such",
        " ",
        "as",
        " ",
        "full",
        " ",
        "stops",
        "/",
        "back-slashes",
        "/",
        "etc",
    );

    var_dump($input);
    var_dump($testArray);
    var_dump($array);

    if ($array == $testArray) {
      echo 'PASS ARRAY COMPARISON </br>';
    } else {
      echo 'FAIL ARRAY COMPARISON </br>';
    }

    $test  = implodeArrayFunction( $array );

    var_dump($test);

    if ($test == $input) {
      echo 'PASS STR COMPARISON </br>';
    } else {
      echo 'FAIL STR COMPARISON </br>';
    }

?>