In PHP, this function is used strip whitespace or other characters from the beginning and end of a string.

    trim(string,charlist)

In the above syntax given "string" is the input to strip characters, "charlist" specify the following characters to remove "\0","\t","\n","\x0B","\r"," ",if none is specified all the characters are removed.

    <?php
    $text   = "\t\tThese are a few words :) ...  ";
    echo "Without trim:".$text;
    echo ">br/<";
    echo "With trim:".trim($text);
    ?>

    Without trim: These are a few words :) ...
    With trim: These are a few words :) ...

In the above example the tab spaces,white spaces are removed from the string and displayed.