xhtml - php data query returns full database text - limit to 40 characters on news snippet -


i'm building new site client , on index page there latest news div tag. need limit info in text box 50 characters, , have tried mysql left() function aswell maxlength in php. i'm not getting results i'm looking for.

<div class="sidebar">       <h3>latest news</h3>       <form name="form1" method="post" action="">       <input name="news_title" type="text" value="<?php echo $row_getnews['news_title']; ?>" size="30" maxlength="30"><br />       <textarea name="news_details" cols="25" rows="10" maxlenght="100"><?php echo $row_getnews['news_details']; $str50 = substr($mystring, 0, 50); ?></textarea>       <br />       <input name="news_user" type="text" value="<?php echo $row_getnews['news_user']; ?>" size="30" maxlength="30">       </form>

assigning $str50 doesn't make sense:

<textarea name="news_details" cols="25" rows="10" maxlenght="100"><?php echo $row_getnews['news_details']; $str50 = substr($mystring, 0, 50); ?></textarea>

one way echo first 50 characters:

<textarea name="news_details" cols="25" rows="10" maxlenght="100"><?php=substr($row_getnews['news_details'],0,50)?></textarea>

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