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Detailed explanation of the use of mb_strstr in php
- php中世界最好的语言Original
- 2018-05-19 11:35:532304browse
This time I will bring you a detailed explanation of the use of mb_strstr in php. What are the precautions when using mb_strstr in php. The following is a practical case, let's take a look.
Preface
This article mainly introduces the relevant content about the basic use of mb_strstr in php, and shares it for your reference. Learning, I won’t say much more below, let’s take a look at the detailed introduction.
mb_strstr
- ##(PHP 5 >= 5.2.0, PHP 7)
- mb_strstr — Finds first occurrence of a string within another
- Finds the first occurrence of a string within another string
string mb_strstr (
string $haystack ,
string $needle [,
bool $before_needle = false [,
string $encoding =mb_internal_encoding() ]]
)
//mb_strstr() finds the first occurrence of needle in haystack and returns the portion of haystack. If needle is not found, it returns FALSE.
//mb_strstr() 查找了 needle 在 haystack 中首次的出现并返回 haystack 的一部分。 如果 needle 没有找到，它将返回 FALSE。
##haystack
The string from which to get the first occurrence of needle
The string from which to get the first occurrence of needle.
needle
The string to find in haystack
Find this string in haystack .
before_needle
Determines which portion of haystack this function returns. If set to TRUE, it returns all of haystack from the beginning to the first occurrence of needle (excluding needle). If set to FALSE, it returns all of haystack from the first occurrence of needle to the end (including needle).
-
Determine this
function Which part of the haystack is returned. If set to TRUE, it returns all characters in haystack from the beginning to the occurrence of needle (excluding needle). If set to FALSE, it returns all characters from the last occurrence of needle in haystack (including needle).
- The character encoding name to use. If this parameter is omitted, the internal character encoding will be used.
- Return Values
- Return part of haystack, or return FALSE if needle is not found.
- Examples
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