PHP study notes: Basic PHP skills for using mb_strstr

This article mainly introduces you to the basic use of mb_strstr in PHP study notes. The article introduces it in great detail through sample codes. It has certain reference learning value for everyone's study or work. Friends who need it follow below Let’s learn together.

Preface

This article mainly introduces the relevant content about the basic use of mb_strstr in PHP. It is shared for everyone’s reference and study. There is not much to say below. Having said that, 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 first occurrence of a string within another string

Description

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。

Parameters

haystack

• The string from which to get the first occurrence of needle

• To get the first occurrence of needle.

needle

• The string to find in haystack

• Find in haystack this string.

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).

encoding

• Character encoding name to use. If it is omitted, internal character encoding is used.

• The character encoding name to use. If this parameter is omitted, the internal character encoding will be used.

Return Values

• Returns the portion of haystack, or FALSE if needle is not found.

• Returns part of haystack, or returns FALSE if needle is not found.

Examples

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