問題描述
將字符串轉換為類的安全名稱 (Convert string to safe name for class)
I have a dynamic menu that I need to convert into background images using CSS classes. I would like to convert the label into a safe class name for the css.
An example being: ‑ Convert string: 'Products & Sunflowers' ‑ Into a string that contains only a‑z and 1‑9. The above would be converted into a validate string that can be used as a class name eg: 'products_sunflowers'
‑‑‑‑‑
參考解法
方法 1:
I use this:
preg_replace('/\W+/','',strtolower(strip_tags($className)));
It will strip all but letters, convert to lower‑case and remove all html tags.
方法 2:
Have you tried preg_replace?
This will return 'ProductsSunflowers' for your above example.
preg_replace('#\W#g','',$className);
方法 3:
BEM‑style clean_class php solution
Shamelessly interpolated from Drupal 7's drupal_clean_css_identifier() and drupal_html_class() functions.
/**
* Convert any random string into a classname following conventions.
*
* ‑ preserve valid characters, numbers and unicode alphabet
* ‑ preserve already‑formatted BEM‑style classnames
* ‑ convert to lowercase
*
* @see http://getbem.com/
*/
function clean_class($identifier) {
// Convert or strip certain special characters, by convention.
$filter = [
' ' => '‑',
'__' => '__', // preserve BEM‑style double‑underscores
'_' => '‑', // otherwise, convert single underscore to dash
'/' => '‑',
'[' => '‑',
']' => '',
];
$identifier = strtr($identifier, $filter);
// Valid characters in a CSS identifier are:
// ‑ the hyphen (U+002D)
// ‑ a‑z (U+0030 ‑ U+0039)
// ‑ A‑Z (U+0041 ‑ U+005A)
// ‑ the underscore (U+005F)
// ‑ 0‑9 (U+0061 ‑ U+007A)
// ‑ ISO 10646 characters U+00A1 and higher
// We strip out any character not in the above list.
$identifier = preg_replace('/[^\\x{002D}\\x{0030}‑\\x{0039}\\x{0041}‑\\x{005A}\\x{005F}\\x{0061}‑\\x{007A}\\x{00A1}‑\\x{FFFF}]/u', '', $identifier);
// Convert everything to lower case.
return strtolower($identifier);
}
方法 4:
I wrote a sample code to solve your problem, hope it helps
<?php
# filename s.php
$r ='@_+(\w)@';
$a='a_bf_csdfc__dasdf';
$b= ucfirst(preg_replace_callback(
$r,
function ($matches) {
return strtoupper($matches[1]);
},
$a
));
echo $a,PHP_EOL;
echo $b,PHP_EOL;
$ php ‑f s.php
a_bf_csdfc__dasdf
ABfCsdfcDasdf
方法 5:
string: dome/some.thing‑to.uppercase.words
result: DomeSomeThingToUppercaseWords
(add your pattern ofc)
var_dump(
str_replace(
['/', '‑', '.'],
'',
ucwords(
$acceptContentType, '/‑.'
)
)
);
(by John Magnolia、tsi、cwallenpoole、JamesWilson、ren8zhu、cottton)