Preg_match返回阵列位置中的两个单词

Question

I am trying to extract all words of a .txt file that contants this structure %HOUSE% %CAR%

I am using Preg_match and It´s works but when I have in the same line two words the array return in one position the two words that are in the same line

$rawContent = file($_FILES["file"]["tmp_name"]); 
$content = implode(" ",$rawContent);    
preg_match_all("/%.*%/",$content,$arrMatches");

Array ( [0] => %HOSTNAME% [1] => %INTERFAZ_LAN% [2] => %IP_LAN% %MASK_LAN% [3] => %ID_INTERFACE_WAN% )

In Position [2] there are two word for example I think that is a problem of my preg match expression I need to add some

Answer 1

By default, regular expressions using the * character will be "greedy", meaning it will match as many characters as possible. In this case, the expression .* is matching IP_LAN% %MASK_LAN.

To change this bevavior to non-greedy, that is to match as few characters as possible, add a question mark after the asterisk, so your pattern becomes /%.*?%/.

Alternatively, you can change your approach and, rather than match any character any number of times, match anything except the percentage sign any number of times: /%[^%]*%/.