如何从字符串中获取前5个字符 [英] How to get first 5 characters from string

问题描述

如何使用php从字符串中获取前5个字符

How to get first 5 characters from string using php

$myStr = "HelloWordl";

结果应该是这样

$result = "Hello";

推荐答案

对于单字节字符串(例如US-ASCII，ISO 8859系列等)，对 substr ="http://en.wikipedia.org/wiki/Multi-byte_character_set" rel ="noreferrer">多字节字符串(例如UTF-8，UTF-16等)使用 mb_substr :

For single-byte strings (e.g. US-ASCII, ISO 8859 family, etc.) use substr and for multi-byte strings (e.g. UTF-8, UTF-16, etc.) use mb_substr:

// singlebyte strings
$result = substr($myStr, 0, 5);
// multibyte strings
$result = mb_substr($myStr, 0, 5);

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