I needed to search for full words in strings. strpos() would match parts of a word. Ex. I want to match the word “ass,” but not “assistant.”
Regular expressions to the rescue:
preg_match("/\b$needle\b/", $haystack);
“\b” stands for word boundary. Take care to use the lowercase “\b”, not “\B”, which is the negated version that matches everywhere that “\b” does not.
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