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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.xdiff.html">xdiff</a></div> <div class="next" style="text-align: right; float: right;"><a href="xdiff.setup.html">Installing/Configuring</a></div> <div class="up"><a href="book.xdiff.html">xdiff</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="intro.xdiff" class="preface"> <h1 class="title">Introduction</h1> <p class="para"> xdiff extension enables you to create and apply patch files containing differences between different revisions of files. </p> <p class="para"> This extension supports two modes of operation - on strings and on files, as well as two different patch formats - unified and binary. Unified patches are excellent for text files as they are human-readable and easy to review. For binary files like archives or images, binary patches will be adequate choice as they are binary safe and handle non-printable characters well. </p> <p class="para"> Starting from version 1.5.0 there are two different sets of functions for generating binary patches. New functions - <a href="function.xdiff-string-rabdiff.html" class="function">xdiff_string_rabdiff()</a> and <a href="function.xdiff-file-rabdiff.html" class="function">xdiff_file_rabdiff()</a> generate output compatible with older functions but are typically faster and generate smaller results. For more details about methods of generating binary patches and differences between them, please check <a href="http://www.xmailserver.org/xdiff-lib.html" class="link external">» libxdiff</a> website. </p> <p class="para"> This extension uses libxdiff to implement these functions. Please see <a href="http://www.xmailserver.org/xdiff-lib.html" class="link external">» http://www.xmailserver.org/xdiff-lib.html</a> for more informations. </p> </div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="book.xdiff.html">xdiff</a></div> <div class="next" style="text-align: right; float: right;"><a href="xdiff.setup.html">Installing/Configuring</a></div> <div class="up"><a href="book.xdiff.html">xdiff</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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