How to remove characters from the result

[Jacq]

Welcome

How to remove characters from the result.

When I try to delete characters I have error

 

Code:

 

function getInbetweenStrings($start, $end, $str){

    $regex = "/$start([a-zA-Z0-9_]*)$end/";

    preg_match_all($regex, $str, $matches);

    return $matches[1];

}

 

$text ='<input type="hidden" name="elementId" value="1826" id="elementId">';

$str = $text;

$str_arr = getInbetweenStrings('<input type="hidden" name="elementId" value="', '" id="elementId">', $str);

 

print_r($str_arr);

 

 

The result of this code looks like this

Array ( [0] => 1826 )

I just want 1826

and when i change print_r($str_arr); to echo $str_arr; then code writes me just Array not even Array ( [0] => 1826 ).

 

Do you have any advice on the code

 

 

[litebearer]

$my_desired_value = $str_arr[0];
echo $my_desired_value;

or simply

echo $str_arr[0];