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PHP5中文手册

xdiff_string_diff

(PECL xdiff:0.2-1.4)

xdiff_string_diff — Make unified diff of two strings

说明

string xdiff_string_diff ( string $str1 , string $str2 [, int $context [, bool $minimal ]] )

Makes a unified diff of two strings.

参数

str1

str2

context

Indicates how many lines of context you want to include in the diff result.

minimal

Set this parameter to TRUE if you want to minimalize the size of the diff (can take a long time).

返回值

Returns string with result or FALSE if an internal error happened.

范例

Example#1 xdiff_string_diff() example

The following code makes unified diff of two articles.

<?php
$old_article 
file_get_contents('./old_article.txt');
$new_article $_REQUEST['article']; /* Let's say that someone pasted a new article to html form */

$diff xdiff_string_diff($old_article$new_article1);
if (
is_string($diff)) {
    echo 
"Differences between two articles:\n";
    echo 
$diff;
}

?>

注释

Note: This function doesn't work well with binary strings. To make diff of binary strings use xdiff_string_diff_binary().