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WordPress Fatal error:Call to undefined function wp_is_mobile() 错误的解决方案

按照下面的代码输入到您的function.php内即可解决这个问题。

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function wp_is_mobile() {
static $is_mobile;

if ( isset($is_mobile) )
return $is_mobile;

if ( empty($_SERVER['HTTP_USER_AGENT']) ) {
$is_mobile = false;
} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Mobile') !== false // many mobile devices (all iPhone, iPad, etc.)
|| strpos($_SERVER['HTTP_USER_AGENT'], 'Android') !== false
|| strpos($_SERVER['HTTP_USER_AGENT'], 'Silk/') !== false
|| strpos($_SERVER['HTTP_USER_AGENT'], 'Kindle') !== false
|| strpos($_SERVER['HTTP_USER_AGENT'], 'BlackBerry') !== false
|| strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mini') !== false
|| strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mobi') !== false ) {
$is_mobile = true;
} else {
$is_mobile = false;
}

return $is_mobile;
}