我想找到并替换数组键中的单词。我试着用正则表达式做这个,但只是部分成功。
例如:
$str = '[something][userName][userEmail][something]';
$user = array(
'id' => (string) '2',
'userName' => (string) 'super user',
'userEmail' => (string) 'superuser@some.domain',
);
// get the keys.
$keys = array_keys($user);
// get the values.
$values = array_values($user);
// surround each key in word boundary and regex delimiter
// also escape any regex metachar in the key
foreach($keys as &$key) {
$key = '/\b'.preg_quote($key).'\b/';
}
// do the replacement using preg_replace
echo preg_replace($keys,$values,$str);
此代码生成:
[something] [超级用户] [superuser@some.domain] [某事]
我想做什么来摆脱围绕'超级用户'和'superuser@some.domain'的方括号,而不是围绕[某事]的那些(在字符串的开头和结尾处)
请帮忙。此致
答案 0 :(得分:1)
为什么不添加方括号来替换模式?
$str = '[something][userName][userEmail][something]';
/* ... */
foreach($keys as &$key) {
$keyWithSquareBrackets = '[' . $key . ']';
$key = '/\b'.preg_quote($keyWithSquareBrackets).'\b/';
}
// do the replacement using preg_replace
echo preg_replace($keys,$values,$str);