php str_replace十六進制顏色

Question

你如何用str_replace替換這個字符串*#ff00ff Hello World *000000到<span style='color:#ff00ff'> Hello World </span>？

謝謝。

Answer 1

$string = '*#ff00ff Hello World *000000'; 

$string = preg_replace('/\*#([a-f\d]{6})(.*)\*[a-f\d]+/', "<span style='color:$1'>$2</span>", $string); 

echo $string; 

也可以做像這樣：

$string = '*#ff00ff Hello World *000000'; 

$string = preg_replace('/\*#([[:xdigit:]]{6})(.*)\*[[:xdigit:]]+/', "<span style='color:$1'>$2</span>", $string); 

echo $string; 

Answer 2

$str = '*#ff00ff Hello World *000000'; 
preg_match('/(#[0-9a-f]{6})/i', $str, $matches); 
echo "<span style='color:{$matches[1]}'> Hello World </span>";