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每次 while() 循环时，以下代码都会产生非法偏移错误:
Warning: Illegal string offset 'username' in /Applications/MAMP/htdocs/admin/scripts/email_owners_send.php on line 48
我正在尝试将 $name 设置为 $email['username'] if $email['username'] < strong>不为空，如果为为空，$name 应设置为$email。 $email 由 while() 语句设置，来自 mysql_fetch_assoc()。这是我目前的代码:
// print out all the email address recipients
$query = mysql_query("SELECT * FROM ownersemails WHERE deleted=0 LIMIT 5");
$recipients = '';
$total = mysql_num_rows($query);
$num = 0;
while($email = mysql_fetch_assoc($query)) {
// add to count
$num++;
// set email
$email = $email['email'];
// set name as username if apparant
if(!empty($email['username'])) {
$name = $email;
}
else {
$name = $email['username'];
}
// add to recipients string (=. append)
$recipients .= '{ "email": "'.$email.'", "name": "'.$name.'" }';
// only add a comma if it isn't the last one
if($num!=$total) {
$recipients .=',';
}
}