不,您是对的:对多字节字符串使用单字节字符串函数可能会导致意外结果。使用多字节字符串函数相反,例如mb_ereg_replace or mb_split:
$string = mb_ereg_replace('"', '\\"', $string);
$string = implode('\\"', mb_split('"', $string));
Edit这是一个mb_replace
使用 split-join 变体实现:
function mb_replace($search, $replace, $subject, &$count=0) {
if (!is_array($search) && is_array($replace)) {
return false;
}
if (is_array($subject)) {
// call mb_replace for each single string in $subject
foreach ($subject as &$string) {
$string = &mb_replace($search, $replace, $string, $c);
$count += $c;
}
} elseif (is_array($search)) {
if (!is_array($replace)) {
foreach ($search as &$string) {
$subject = mb_replace($string, $replace, $subject, $c);
$count += $c;
}
} else {
$n = max(count($search), count($replace));
while ($n--) {
$subject = mb_replace(current($search), current($replace), $subject, $c);
$count += $c;
next($search);
next($replace);
}
}
} else {
$parts = mb_split(preg_quote($search), $subject);
$count = count($parts)-1;
$subject = implode($replace, $parts);
}
return $subject;
}
至于参数的组合,该函数的行为应类似于单字节str_replace
.