I need to write simple routing system, I have only one question.
When I have url/slug like this
/article/1/simple-article-1
What characters should be allowed there.
Of course letters, digits, '-', '/' and?
2
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'a-z 0-9~%.:_()@\-' change as per needdevpro– devpro2016-01-24 10:08:20 +00:00Commented Jan 24, 2016 at 10:08
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Have a look at this slug generator function cubiq.org/the-perfect-php-clean-url-generator and keep the international characters in mind. If you know how the slugified URL is generated, you can adapt your redirect rule.pmayer– pmayer2016-01-24 10:49:25 +00:00Commented Jan 24, 2016 at 10:49
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2 Answers
.htaccess:
Options -Indexes
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php?/$1 [L,QSA]
PHP:
if(isset($_SERVER['QUERY_STRING'])) {
if(!preg_match('/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$/', $_SERVER['QUERY_STRING'])) {
return false;
}
$info = explode('/', $_SERVER['QUERY_STRING']);
....
}
Comments
What characters should be allowed there.
Usually slugs are all lowercase, with accented characters replaced by letters of the english alphabet and blank characters replaced by a - or an _. Punctuation marks like the period, comma, question mark, exclamation point, apostrophe and quotation mark are generally removed. It may be also truncated to keep a reasonable length.
The reserved chars that may have a particular meaning in the URI are: !, *, ', (, ), ;, :, @, &, =, +, $, /, ?, #, [ and ]. If the character would conflict with a reserved character's purpose, then the conflicting data must be percent-encoded before the URI is formed.
Once you product the URI from its component parts, if you want add characters that are not alpha, digit, -, ., _ or ~ you should always percent-encoding it.
Example:
/article/1/i!want!use!the!exclamation!mark <-- bad
/article/1/i%21want%21use%21the%21exclamation%21mark <-- good
