magento php 5.5 removeTags test

<?php
error_reporting(-1);

function magento_removeTags($html){

    $html = @preg_replace("# <(?![/a-z]) | (?<=\s)>(?![a-z]) #exi", "htmlentities('$0')", $html);
    $html =  strip_tags($html);
    return htmlspecialchars_decode($html);
}
function magento_removeTags_fixed($html){

    $html = preg_replace_callback(
        "# <(?![/a-z]) | (?<=\s)>(?![a-z]) #xi",
        function($html){ return htmlentities($html[0]); },
        $html
    );
    $html =  strip_tags($html);
    return htmlspecialchars_decode($html);
}


$testCases = array(
    "default store name",
    "<div>default store name</div>",
    "<div>default store name<div>",
    "</a>default store name<>",
);

foreach($testCases as $case){
    echo magento_removeTags($case).PHP_EOL;
    echo magento_removeTags_fixed($case).PHP_EOL;
    
    echo '#########'.PHP_EOL;
}

echo PHP_EOL;