I have a lot of strings, and I need to check if each of them contains a color.
For example :
So, the two last strings must return true.
What is the best way to find it?
Regex, or check with any substr() ?
I always work with strpos since it seems to be the fastest alternative (don't know about regex though).
if(strpos($haystack, $needle) !== FALSE) return $haystack;
if(strpos($haystack, $needle) !== FALSE) return $haystack; and another thing to remember is if you were looking for red then fred would also return a result.
In regexp you can write
preg_match_all("/(red|blue|black|white|etc)/", $haystack, $matches);
print_r($matches);
Use a loop for all the strings, and you'll easily notice which of the values from $matches you need.
if you will use strpos then it returns a position of a string it will return a number 1,2,3 etc not true or false.
And the other problem is if string exist at the start it will return 0 which will consider as false then strpos cannot find that word.
strpos or strripos in php should be able to search for a single word in a string. You may have to loop in order to search for all colors if using it though
