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一个php实现的简单语法高亮显示的函数，注意：这个函数设计的比较简单，可能对某些语法不能高亮显示，你可以自己扩充该函数的功能
- function syntax_highlight($code){
-
- // this matches --> "foobar" $code = preg_replace(
- '/"(.*?)"/U',
- '"$1"', $code
- );
-
- // hightlight functions and other structures like --> function foobar() $code = preg_replace(
- '/(\s)\b(.*?)((\b|\s)\()/U',
- '$1$2$3',
- $code
- );
-
- // Match comments (like /* */):
- $code = preg_replace(
- '/(\/\/)(.+)\s/',
- '$0',
- $code
- );
-
- $code = preg_replace(
- '/(\/\*.*?\*\/)/s',
- '$0',
- $code
- );
-
- // hightlight braces:
- $code = preg_replace('/(\(|\[|\{|\}|\]|\)|\->)/', '$1', $code);
-
- // hightlight variables $foobar
- $code = preg_replace(
- '/(\$[a-zA-Z0-9_]+)/', '$1', $code
- );
-
- /* The \b in the pattern indicates a word boundary, so only the distinct
- ** word "web" is matched, and not a word partial like "webbing" or "cobweb"
- */
-
- // special words and functions
- $code = preg_replace(
- '/\b(print|echo|new|function)\b/',
- '$1', $code
- );
-
- return $code;
- }
-
-
- /*example-start*/
-
- /*
- ** Create some example PHP code:
- */
-
- $example_php_code = '
- // some code comment:
- $example = "foobar";
-
- print $_SERVER["REMOTE_ADDR"];
-
- $array = array(1, 2, 3, 4, 5);
-
- function example_function($str) {
- // reverse string
- echo strrev($obj);
- }
-
- print example_function("foo");
-
- /*
- ** A multiple line comment
- */
-
- print "Something: " . $example;';
-
-
- // output the formatted code:
- print '
- print syntax_highlight($example_php_code);
- print '';
-
- /*example-end*/
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