这期内容当中小编将会给大家带来有关利用php怎么实现一个语法高亮功能,文章内容丰富且以专业的角度为大家分析和叙述,阅读完这篇文章希望大家可以有所收获。
function syntax_highlight($code){ // this matches --> "foobar" <-- $code = preg_replace( '/"(.*?)"/U', '"<span >$1</span>"', $code ); // hightlight functions and other structures like --> function foobar() <--- $code = preg_replace( '/(\s)\b(.*?)((\b|\s)\()/U', '$1<span >$2</span>$3', $code ); // Match comments (like /* */): $code = preg_replace( '/(\/\/)(.+)\s/', '<span ><i>$0</i></span>', $code ); $code = preg_replace( '/(\/\*.*?\*\/)/s', '<span ><i>$0</i></span>', $code ); // hightlight braces: $code = preg_replace('/(\(|\[|\{|\}|\]|\)|\->)/', '<strong>$1</strong>', $code); // hightlight variables $foobar $code = preg_replace( '/(\$[a-zA-Z0-9_]+)/', '<span >$1</span>', $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/', '<span >$1</span>', $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: " . $example;'; // output the formatted code: print '<pre>'; print syntax_highlight($example_php_code); print '</pre>'; /*example-end*/
上述就是小编为大家分享的利用php怎么实现一个语法高亮功能了,如果刚好有类似的疑惑,不妨参照上述分析进行理解。如果想知道更多相关知识,欢迎关注亿速云行业资讯频道。
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