intro.mbstring.html

来自「php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容」· HTML 代码 · 共 48 行

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head>  <title>Introduction</title>  <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="book.mbstring.html">Multibyte String</a></div> <div class="next" style="text-align: right; float: right;"><a href="mbstring.setup.html">Installing/Configuring</a></div> <div class="up"><a href="book.mbstring.html">Multibyte String</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="intro.mbstring" class="preface">  <h1 class="title">Introduction</h1>  <p class="para">   While there are many languages in which every necessary character can   be represented by a one-to-one mapping to an 8-bit value, there are also   several languages which require so many characters for written   communication that they cannot be contained within the range a mere byte    can code (A byte is made up of eight bits. Each bit can contain only two    distinct values, one or zero. Because of this, a byte can only represent    256 unique values (two to the power of eight)). Multibyte character    encoding schemes were developed to express more than 256 characters    in the regular bytewise coding system.  </p>  <p class="para">   When you manipulate (trim, split, splice, etc.) strings encoded in a   multibyte encoding, you need to use special functions since two or more   consecutive bytes may represent a single character in such encoding   schemes. Otherwise, if you apply a non-multibyte-aware string function   to the string, it probably fails to detect the beginning or ending of   the multibyte character and ends up with a corrupted garbage string that   most likely loses its original meaning.  </p>  <p class="para">   <i>mbstring</i> provides multibyte specific string functions    that help you deal with multibyte encodings in PHP. In addition to that,    <i>mbstring</i> handles character encoding conversion between    the possible encoding pairs. <i>mbstring</i> is designed to    handle Unicode-based encodings such as UTF-8 and UCS-2 and many    single-byte encodings for convenience (listed below).  </p> </div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="book.mbstring.html">Multibyte String</a></div> <div class="next" style="text-align: right; float: right;"><a href="mbstring.setup.html">Installing/Configuring</a></div> <div class="up"><a href="book.mbstring.html">Multibyte String</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>

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