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PHP面试题之驼峰字符串转换成下划线样式例子

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Release: 2016-06-06 19:44:10
Original
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自己在看到这个问题的时候,想到的是用ASCII码来处理,没往万能的正则上去想。好吧,下面来看看答案: 答案1: 代码如下 复制代码 $str = 'OpenAPI'; $length = mb_strlen($str); $new = ''; for($i = 0; $i $length; $i++) { $num = ord($str[$i]); $pre =

自己在看到这个问题的时候,想到的是用ASCII码来处理,没往万能的正则上去想。好吧,下面来看看答案:

答案1:

代码如下 复制代码
$str = 'OpenAPI';

$length = mb_strlen($str);

$new = '';

for($i = 0; $i {
$num = ord($str[$i]);
$pre = ord($str[$i - 1]);

$new .= ($i != 0 && ($num >= 65 && $num = 97 && $pre } www.111cn.net

echo strtolower($new) . '
';

答案2:

代码如下 复制代码
echo strtolower(preg_replace('/((?';

那反过来下划线分割字符串转换成驼(www.111cn.net)峰式字符串怎么搞呢

代码如下 复制代码
f = new File("d:/temp/t.txt")
if(f.exists()){
f.eachLine{ line->
line = line.trim()
String[] elems = line.split('_')
for(int i = 0; i elems[i] = elems[i].toLowerCase()
if(i != 0){
String elem = elems[i]
char first = elem[0] as char
elems[i] = "" + (char)(first - 32) + elem.substring(1)
}
}
println elems.join()
}
}

from:http://www.111cn.net/phper/php-cy/59093.htm

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