php replaces all symbols or spaces in the string with "-"

Question

How to replace all symbols or spaces in a string of words with "-"
Including,? @%! ＄&＊(whatever)

Answer 1

$result = preg_replace('/[^w]|[_]/', '「-」', $str);
匹配替换非字母数字并替换。
w包括_,如果想一并替换掉，再添加上 |[_].

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Reply to comment:
If you want to replace characters other than Chinese and English, change the pattern to the following form:
/[^bA-Za-zx{4e00}-x{9fa5}]/u /[^bA-Za-zx{4e00}-x{9fa5}]/u
b 表示空格；
u4e00-u9fa5是unicode里中文的表示法，但preg_replace不支持u的写法，可以使用 x{XXXX}来替代；
最后使用ub represents a space;

u4e00-u9fa5 is the representation of Chinese in unicode, but preg_replace does not support the writing method of u, you can use x{XXXX} code> instead; 🎜Finally use the u option to indicate that the utf-8 character set is used. 🎜

Answer 2

Call removeXss()

Answer 3

preg_replace is one method, here I provide another method, see the code below

    $str = 'hello %abc?11';
    $patten = array(
        '【',
        '】',
        '「',
        '?',
        '%',
        '&'
    );

    $rs = str_replace(' ','',str_replace($patten,'「-」',$str));
    echo $rs;