PHP implementation of simple syntax highlighting function example analysis, highlight example Analysis _php tutorial

PHP implementation of simple syntax highlighting function example analysis, highlighting case analysis

In this paper, a simple syntax highlighting function for PHP implementation is described. Share to everyone for your reference. The specific analysis is as follows:

This is a PHP implementation of a simple syntax highlighting function, Note: This function design is relatively simple, may not highlight some of the syntax, you can expand the function

function Syntax_highlight ($code) {//This matches-"foobar" <--$code = preg_replace ('/"(. *?)" /u ', ' " $"', $code); Hightlight functions and other structures like--and function foobar () <---$code = preg_replace ('/(\s) \b (. *?) ((\b|\s) \ ()/U ', ' $ $$ ', $code); Match Comments (like/*/): $code = Preg_replace ('/(\/\/) (. +) \s/', ' $', $code); $code = Preg_replace ('/(\/\*.*?\*\/)/s ', ' $', $code); Hightlight braces: $code = Preg_replace ('/(\ (|\[|\{|\}|\]|\) |\->)/', ' $', $code); Hightlight variables $foobar $code = preg_replace ('/(\$[a-za-z0-9_]+)/', ' $', $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/', ' $', $code); return $code;} /*example-start*//*** Create Some example PHP code:*/$example _php_code = '//Some code comment: $example = "Foobar";p rint $ _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:". $example; '; /Output the formatted Code:print '
';p rint syntax_highlight ($example _php_code);p rint '
';/*example-end*/

I hope this article is helpful to everyone's PHP programming.

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