Found matches if multiple needles

user_434218 0
Viewed 33

Sorry, I couldn't find the answer to this, but I'm using str_contains to find matches of a str within another str.

str_contains($haystack, $needle);

However, is there a way to have multiple needles or do I need to use this function several times?

php
2 Answers

There is no built-in function to do this, but you can make your own

function str_containsa(string $haystack, array $needles){
    foreach ($needles as $needle){
       if (str_contains($haystack, $needle)){
           return true;
       }
    }
    return false;
}

usage

str_containsa('the quick brown fox jumped over the lazy dog', ['fox', 'cow', 'goat']); 
//returns true as string contains fox
user_78796340

also you can use regex and preg_match_all:

  • join needles into pattern string like (\bneedle1\b)|(\bneedle2\b) etc
  • make regex pattern case insensitive i and search multiline m
function stringHasWords(string $string, array $needles)
  {
    $nPattern = join('|', array_map(function ($needle) {
      // note \b token 
      return "(\b$needle\b)";
    }, $needles));
    // m - multiline, i - case insensitive
    $pattern = "/$nPattern/mi";
    // returns count of matches or false on error
    $count = preg_match_all($pattern, $string, $matches);
    return $count && $count > 0;
  }

note that \b token makes regex search only exact words, no match for o in string fox

user_63300830
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