php str_replace hex color

问题

how do you replace this string *#ff00ff Hello World *000000 to <span style='color:#ff00ff'> Hello World </span> using str_replace?

Thanks.

回答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;

can also be done like so:

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

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

echo $string;

回答2:

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

来源：https://stackoverflow.com/questions/13579641/php-str-replace-hex-color