代码如下:
$num = 'www.jb51.net'; $string = "this string has four words.
"; $string = ereg_replace ('four', $num, $string); echo $string; $num = '49'; $string = "this string has four words"; $string = ereg_replace ('four', $num, $string); echo $string; $string ="测试用文字"; echo "**********$string**********"; $string = ereg_replace ("^", "
", $string); $string = ereg_replace ("$", "
", $string); echo "==========$string==========";