如何从数组中找到字符串中的“http”？

Question

In PHP I have an array like this:

array
  0 => string 'open' (length=4)
  1 => string 'http://www.google.com' (length=21)
  2 => string 'blank' (length=5)

but it could also be like:

array
  0 => string 'blank' (length=5)
  1 => string 'open' (length=4)
  2 => string 'http://www.google.com' (length=21)

now it is easy to find "blank" with in_array("blank", $array) but how can I see if one string is starting with "http"?

I've tried with

array_search('http', $array); // not working
array_search('http://www.google.com', $array); // is working

now everything after `http? could vary (how to write vary, varie? could be different is what I mean!)

Now do I need a regex or how can I check if http exists in array string?

Thanks for advices

Answer 1

"Welcome to PHP, there's a function for that."

Try preg_grep

preg_grep("/^http\b/i",$array);

Regex explained:

/^http\b/i
 ^\  / ^ `- Case insensitive match
 | \/  `--- Boundary character
 |  `------ Literal match of http
 `--------- Start of string