嗯，经过研究后我才发现this question和一个drupal的事情。
我发现的问题与我的不同，因为他们的错误是在if中声明函数，而不是那里。
让我们直截了当。我正在使用一个类（classes / Post.php）来显示一些帖子。如果我打电话给我，我会收到这个错误：
致命错误：在第239行的C：\ xampp \ htdocs \ classes \ Post.php中调用未定义的函数timeCounting（）
这是我的Post.php类（第一个函数是timeCounting（）：
<?php
include('./classes/Notify.php');
class Post {
public static function timeCounting($time_ago)
{
$time_ago = strtotime($p['posted_at']);
$cur_time = time();
$time_elapsed = $cur_time - $time_ago;
$seconds = $time_elapsed ;
$minutes = round($time_elapsed / 60 );
$hours = round($time_elapsed / 3600);
$days = round($time_elapsed / 86400 );
$weeks = round($time_elapsed / 604800);
$months = round($time_elapsed / 2600640 );
$years = round($time_elapsed / 31207680 );
if ($seconds <= 60) {
return "just now";
}
else if ($minutes <= 60) {
if ($minutes == 1) {
return "an minute ago";
} else {
return "$minutes minutes ago";
}
}
else if ($hours <= 24) {
if ($hours == 1) {
return "an hour ago";
} else {
return "$hours hours ago";
}
}
else if ($days <= 7) {
if ($days == 1) {
return "yesterday";
} else {
return "$days days ago";
}
}
else if ($weeks <= 4.3) {
if ($weeks == 1) {
return "a week ago";
} else {
return "$weeks weeks ago";
}
}
else if ($months <= 12) {
if ($months == 1) {
return "a month ago";
} else {
return "$months months ago";
}
}
else if ($years <= 1) {
if ($years == 1) {
return "a year ago";
} else {
return "$years years ago";
}
}
else if ($years >= 10) {
if ($years == 10) {
return "a decade ago";
} else {
return "over than a decade ago ($years years)";
}
}
}
public static function createPost($postbody, $loggedInUserId, $profileUserId) {
if (strlen($postbody) > 160 || strlen($postbody) < 1) {
die('Incorrect length!');
}
$topics = self::getTopics($postbody);
if ($loggedInUserId == $profileUserId) {
if (count(Notify::createNotify($postbody)) != 0) {
foreach (Notify::createNotify($postbody) as $key => $n) {
$s = $loggedInUserId;
$r = DB::query('SELECT id FROM users WHERE username=:username', array(':username'=>$key))[0]['id'];
if ($r != 0) {
DB::query('INSERT INTO notifications VALUES (\'\', :type, :receiver, :sender, :extra)', array(':type'=>$n["type"], ':receiver'=>$r, ':sender'=>$s, ':extra'=>$n["extra"]));
}
}
}
DB::query('INSERT INTO posts VALUES (\'\', :postbody, NOW(), :userid, 0, \'\', :topics)', array(':postbody'=>$postbody, ':userid'=>$profileUserId, ':topics'=>$topics));
} else {
die('Incorrect user!');
}
}
public static function createImgPost($postbody, $loggedInUserId, $profileUserId) {
if (strlen($postbody) > 160) {
die('Incorrect length!');
}
$topics = self::getTopics($postbody);
if ($loggedInUserId == $profileUserId) {
if (count(Notify::createNotify($postbody)) != 0) {
foreach (Notify::createNotify($postbody) as $key => $n) {
$s = $loggedInUserId;
$r = DB::query('SELECT id FROM users WHERE username=:username', array(':username'=>$key))[0]['id'];
if ($r != 0) {
DB::query('INSERT INTO notifications VALUES (\'\', :type, :receiver, :sender, :extra)', array(':type'=>$n["type"], ':receiver'=>$r, ':sender'=>$s, ':extra'=>$n["extra"]));
}
}
}
DB::query('INSERT INTO posts VALUES (\'\', :postbody, NOW(), :userid, 0, \'\', \'\')', array(':postbody'=>$postbody, ':userid'=>$profileUserId));
$postid = DB::query('SELECT id FROM posts WHERE user_id=:userid ORDER BY ID DESC LIMIT 1;', array(':userid'=>$loggedInUserId))[0]['id'];
return $postid;
} else {
die('Incorrect user!');
}
}
public static function likePost($postId, $likerId) {
if (!DB::query('SELECT user_id FROM post_likes WHERE post_id=:postid AND user_id=:userid', array(':postid'=>$postId, ':userid'=>$likerId))) {
DB::query('UPDATE posts SET likes=likes+1 WHERE id=:postid', array(':postid'=>$postId));
DB::query('INSERT INTO post_likes VALUES (\'\', :postid, :userid)', array(':postid'=>$postId, ':userid'=>$likerId));
Notify::createNotify("", $postId);
} else {
DB::query('UPDATE posts SET likes=likes-1 WHERE id=:postid', array(':postid'=>$postId));
DB::query('DELETE FROM post_likes WHERE post_id=:postid AND user_id=:userid', array(':postid'=>$postId, ':userid'=>$likerId));
}
}
public static function getTopics($text) {
$text = explode(" ", $text);
$topics = "";
foreach ($text as $word) {
if (substr($word, 0, 1) == "#") {
$topics .= substr($word, 1).",";
}
}
return $topics;
}
public static function link_add($text) {
$text = explode(" ", $text);
$newstring = "";
foreach ($text as $word) {
if (substr($word, 0, 1) == "@") {
$newstring .= "<a href='profile.php?username=".substr($word, 1)."'>".htmlspecialchars($word)."</a> ";
} else if (substr($word, 0, 1) == "#") {
$newstring .= "<a href='topics.php?topic=".substr($word, 1)."'>".htmlspecialchars($word)."</a> ";
} else {
$newstring .= htmlspecialchars($word)." ";
}
}
return $newstring;
}
public static function displayPosts($userid, $username, $loggedInUserId) {
$dbposts = DB::query('SELECT * FROM posts WHERE user_id=:userid ORDER BY id DESC', array(':userid'=>$userid));
$username1 = DB::query('SELECT username FROM users WHERE username=:username', array(':username'=>$_GET['username']))[0]['username'];
$posts = "";
foreach($dbposts as $p) {
if (!DB::query('SELECT post_id FROM post_likes WHERE post_id=:postid AND user_id=:userid', array(':postid'=>$p['id'], ':userid'=>$loggedInUserId))) {
$posts .= "<blockquote> ".self::link_add($p['body'])."<br><a href='".$p['postimg']."'><img class='post' src='".$p['postimg']."'></a><br>"."
<form action='profile.php?username=$username&postid=".$p['id']."' method='post'>
<input type='submit' name='like' value='Like'>
<span>".$p['likes']." likes</span>
";
if ($userid == $loggedInUserId) {
$posts .= "<input type='submit' name='deletepost' value='delete' />";
}
$posts .= "
</form></blockquote><hr /></br />
";
} else {
$posts .= "<blockquote> ".self::link_add($p['body'])."<br> <img class='post' src='".$p['postimg']."'>"."
<form action='profile.php?username=$username&postid=".$p['id']."' method='post'>
<input type='submit' name='unlike' value='unlike'>
<span>".$p['likes']." likes</span>
";
if ($userid == $loggedInUserId) {
$posts .= "<input type='submit' name='deletepost' value='x' />";
}
$posts .= "
</form></blockquote><hr /></br />
";
}
}
return $posts;
}
public static function displayFosts($userid, $username, $loggedInUserId) {
$dbposts = DB::query('SELECT posts.id, posts.body, posts.posted_at, posts.postimg, posts.likes, users.`username` FROM users, posts, followers
WHERE posts.user_id = followers.user_id
AND users.id = posts.user_id
AND follower_id = :userid
ORDER BY posts.likes DESC;', array(':userid'=>$userid));
//$username2 = DB::query('SELECT username FROM users WHERE id=:userid', array(':username'=>$_GET['*']))[0]['username'];
$posts = "";
$username = "nope";
foreach($dbposts as $p) {
if (!DB::query('SELECT post_id FROM post_likes WHERE post_id=:postid AND user_id=:userid', array(':postid'=>$p['id'], ':userid'=>$loggedInUserId))) {
$posts .= "<blockquote> ".self::link_add($p['body'])."<br><a href='".$p['postimg']."'><img class='post' src='".$p['postimg']."'></a> <p>".timeCounting($time_ago).
$posts .= "</p>
</form></blockquote><hr /></br />
";
} else {
$posts .= "<blockquote> ".self::link_add($p['body'])."<br> <img class='post' src='".$p['postimg']."'>";
$time = strtotime($p['posted_at']);
}
}
return $posts;
}
}
?>
我真的希望代码不会被破坏。
答案 0 :(得分：2)
类中的函数不是全局函数名称空间的一部分，需要以不同方式访问。有关详细信息，请参阅PHP OOP basics documentation。
您想要self::timeCounting()。
如果您在声明中没有static关键字，那就是$this->timeCounting()。
答案 1 :(得分：1)
在第239行，它必须是：
$posts .= "<blockquote> ".self::link_add($p['body'])."<br><a href='".$p['postimg']."'><img class='post' src='".$p['postimg']."'></a> <p>".self::timeCounting($time_ago).
而不是
$posts .= "<blockquote> ".self::link_add($p['body'])."<br><a href='".$p['postimg']."'><img class='post' src='".$p['postimg']."'></a> <p>".timeCounting($time_ago).