How to use php mb_strpos
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php mb_strpos function is used to find the first occurrence of a string in another string using the syntax "mb_strpos(string $haystack,string $needle,int $offset = 0... "。
Operating environment: Windows 7 system, PHP 7.4 version, Dell G3 computer.
What is PHP MB_strpos?
mb_strpos
(PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8)
mb_strpos -Find the first occurrence of a string in another string
description
mb_strpos( string $haystack, string $needle, int $offset = 0, string $encoding = mb_internal_encoding()): int
Find the first occurrence of string in a string.
Performs a multibyte safe strpos() operation based on the number of characters. The position of the first character is 0, the position of the second character is 1, and so on.
Parameters:
haystack
String to be checked.
needle
Look for this string in haystack. Unlike strpos(), numeric values are not treated as sequential values of characters.
offset
Offset of search position. If this parameter is not provided, 0 will be used. Negative offsets are counted from the end of the string.
encoding
The encoding parameter is character encoding. If omitted or null, internal character encoding is used.
return value
Returns the numeric value of the first occurrence of needle in haystack of string. If the needle is not found, it returns false.
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