装的都是中文版的wordpress,本机上都是中文，但装到网上，就全都是英文版了，用了插件 language_switch 还是不行，告诉我zh_CN.mo Not a valid mo file. 又求助于gooogle.查到

找到wp-includes下的gettext.php

if ($magic == ($MAGIC1 & 0xFFFFFFFF) || $magic == ($MAGIC3 & 0xFFFFFFFF)) { // to make sure it works for 64-bit platforms
$this->BYTEORDER = 0;
} elseif ($magic == ($MAGIC2 & 0xFFFFFFFF)) {
$this->BYTEORDER = 1;
} else {
$this->error = 1; // not MO file
return false;
}

修改成

if ($magic == $MAGIC1) {
$this->BYTEORDER = 0;
} elseif ($magic == $MAGIC2) {
$this->BYTEORDER = 1;
} else {
$this->error = 1; // not MO file
return false;
}

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