PHP familiarity shortcuts

site/doc/pages/contains.txt

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+:sig
+bool contains(String haystack, String needle)
+
+:params
+haystack : string to search in
+needle : substring to look for
+return value : `true` when `needle` appears in `haystack`, otherwise `false`
+
+:desc
+Returns whether `haystack` contains `needle`.
+
+An empty `needle` always returns `true`.
+
+:see
+>string
+
+:related
+**PHP:** `str_contains()`
+**JavaScript / Node.js:** `String.prototype.includes()`