[PHP & MySQL] Str_replace funktioniert nicht

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		$text = str_replace ( ':D', '<img src="images/smilies/biggrin.gif">', $text ); 
		$text = str_replace ( '?(', '<img src="images/smilies/confused.gif">', $text );
		$text = str_replace ( '8)', '<img src="images/smilies/cool.gif">', $text );
		$text = str_replace ( 'o.o', '<img src="images/smilies/eek.gif">', $text );
		$text = str_replace (':*(', '<img src="images(smilies/crying.gif">', $text );
		$text = str_replace (':evil:', '<img src="images/smilies/evil.gif">', $text );
		$text = str_replace (':(', '<img src="images/smilies/frown.gif">', $text );
		$text = str_replace ('=)', '<img src="images/smilies/happy.gif">', $text );
		$text = str_replace (':mad:', '<img src="images/smilies/mad.gif">', $text );
		$text = str_replace (':]', '<img src="images/smilies/pleased.gif">', $text );
		$text = str_replace (':0', '<img src="images/smilies/redface.gif">', $text );
		$text = str_replace (':rolleyes', '<img src"images/smilies/rolleyes.gif">', $text);
		$text = str_replace (':)', '<img src"images/smilies/smile.gif">', $text );
		$text = str_replace (':P', '<img src"images/smilies/tongue.gif">', $text );
		$text = str_replace (';D', '<img  src="images/smilies/wink.gif">', $text );
		$text = str_replace ('[b]', '<b>', $text );
		$text = str_replace ('[/b]', '</b>', $text );
		$text = str_replace ('[i]', '<i>', $text );
		$text = str_replace ('[/i]', '</i>', $text );