PHP Mb_strripos Use

Mb_strripos

• (PHP 4 >= 4.0.6, PHP 5, PHP 7)
• Mb_strrpos-find position of last occurrence of a string in a string
• mb_strripos-case insensitive to find where a string last appears in a string

Description

mb_strrpos(     $haystack,    $needle[,     $offset0[,     $encodingmb_internal_encoding()]]     )//Performs a multibyte safe strrpos() operation based on the number of characters. needle position is counted from //the beginning of haystack. First character's position is 0. Second character position is 1.//mb_strripos() 基于字符数执行一个多字节安全的 strripos() 操作。 needle 的位置是从 haystack 的开始进行统计的。 第一个字符的位置//是 0，第二个字符的位置是 1。 和 mb_strrpos() 不同的是，mb_strripos() 是大小写不敏感的。

Parametershaystack

• The string being checked, for the last occurrence of needle
• Finds the position where the needle last appears in this string.

Needle

• The string to find in haystack.
• Look for this string in haystack.

Offset

• May is specified to begin searching a arbitrary number of characters into the string. Negative values would stop searching at a arbitrary point prior to the end of the string.
• The location to start the search in haystack.

Encoding

• The encoding parameter is the character encoding. If It is omitted, the internal character encoding value would be used.
• The character encoding name used. If omitted, the internal encoding is used.

Return Values

• Returns the numeric position of the last occurrence of needle in the haystack string. If needle is not found, it returns FALSE.
• Returns the value of the last occurrence of needle in the string haystack. If needle is not found, it will return FALSE.

Example

<?php/*** Created by Phpstorm.* User:zhangrongxiang* DATE:2018/2/5* Time: The afternoon at 11:00am */$str="Life was short,i use PHP";$por=Mb_strripos( $str, "PHP", Ten );Echo $por.Php_eol; //20functionStartsWith( $haystack, $needle ){$res=false;    if ( Mb_strripos( $haystack, $needle, 0, "Utf-8" )===0 ){$res=true;}return $res;}functionEndsWith( $haystack, $needle ){$res=false;    $len=Mb_strlen( $haystack );    $pos=$len-Mb_strlen( $needle );    if ( Mb_strripos( $haystack, $needle, 0, "Utf-8" )===$pos ){$res=true;}return $res;}if (StartsWith( $str, "Life" ) ){//true    Echo "StartsWith ($str, Life) ".Php_eol;}if (StartsWith( $str, "PHP" ) ){Echo "StartsWith ($str, PHP) ".Php_eol;}Else{//false    Echo "No StartsWith ($str, PHP) ".Php_eol;}if (EndsWith( $str, "PHP" ) ){//true    Echo "EndsWith ($str, PHP) ".Php_eol;}if (EndsWith( $str, "Life" ) ){Echo "EndsWith ($str, Life) ".Php_eol;}Else{//false    Echo "No EndsWith ($str, Life) ".Php_eol;}

Article reference

• http://php.net/manual/en/function.mb-strrpos.php

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PHP Mb_strripos Use