正则表达式 - PHP如何将字符串中带有“-”的地方去掉“-”并将后面紧跟的字母转换为大写

如
“ask-simple”转换为“askSimple”
“ask-simple-answer”转换为“askSimpleAnswer”

回复内容：

如
“ask-simple”转换为“askSimple”
“ask-simple-answer”转换为“askSimpleAnswer”

<code class="lang-php">function camelcase($str){
    return    preg_replace_callback('/([-_]+([a-z]{1}))/i',function($matches){
        return strtoupper($matches[2]);
    },$str);
}
</code>

来一个正则表达式版本的

<code class="lang-php">preg_replace('/-([A-Za-z])/e',"strtoupper('$1')",$str)
</code>

<code>function camelCase($value){

     $studly = ucwords(str_replace(array('-', '_'), ' ', $value));
     return str_replace(' ','',lcfirst($studly));
}

echo camelCase('ask-simple-answer');
</code>

“ask-simple-answer”转换为“askSimpleAnswer”

这个应该是camel case, 刚好想起laravel有这个函数, 稍作修改,抄过来了