Use the PHP str_contains() function to carry a case-sensitive search to check if a string is in another string.This can be used to create a one-character string in a single-byte encoding such as ASCII, ISO-8859, or Windows 1252, by passing the position of a desired character in the encoding's. ![]() Note: The string positions start at 0, and not 1. If substring not found, then it returns false as output. This function returns the position of the 1st (first) occurrence of a substring in a string. Output: The string Cool is not in the sentence. Returns a one-character string containing the character specified by interpreting codepoint as an unsigned integer. The PHP provides strpos ( ) function which is used to check if a string contains a specific substring or not. If you use an earlier version of PHP, you can polyfill the str_contains() function like this:
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