我不知道我做错了什么,但我得到了解析错误:">分析错误:语法错误,意外的','在…">
$msg= 'This is ', htmlentities($from, ENT_QUOTES, 'UTF-8'),' and ', htmlentities($to, ENT_QUOTES, 'UTF-8'),' dates statistic ';
echo $msg;
你能帮我吗?我不想使用串联,因为速度较慢。
Basicaly逗号分隔的值是参数。您正试图将参数传递给变量,但没有传递回显!
echo 'This is ',
htmlentities($from, ENT_QUOTES, 'UTF-8'),
' and ',
htmlentities($to, ENT_QUOTES, 'UTF-8'),
' dates statistic ';
用$msg:中的.
替换字符串之间的,
$msg= 'This is ' . htmlentities($from, ENT_QUOTES, 'UTF-8') . ' and ' .
htmlentities($to, ENT_QUOTES, 'UTF-8') . ' dates statistic ';
或直接回声:
echo 'This is ', htmlentities($from, ENT_QUOTES, 'UTF-8'),' and ', htmlentities($to, ENT_QUOTES, 'UTF-8'),' dates statistic ';
echo接受用逗号分隔的多个值,而变量赋值则不接受。
这将工作
echo 'This is ', htmlentities($from, ENT_QUOTES, 'UTF-8'),' and ', htmlentities($to, ENT_QUOTES, 'UTF-8'),' dates statistic ';
或
$msg= 'This is '. htmlentities($from, ENT_QUOTES, 'UTF-8') . ' and ' . htmlentities($to, ENT_QUOTES, 'UTF-8') . ' dates statistic ';
echo $msg;
不能在字符串赋值中使用逗号,逗号仅适用于echo
命令本身。因此,如果你想避免上面提到的串联,你需要这样做:
echo 'This is ', htmlentities($from, ENT_QUOTES, 'UTF-8'),
' and ', htmlentities($to, ENT_QUOTES, 'UTF-8'),' dates statistic ';
echo 'This is ', htmlentities($from, ENT_QUOTES, 'UTF-8'),' and ', htmlentities($to, ENT_QUOTES, 'UTF-8'),' dates statistic ';
逗号仅适用于echo
,不适用于变量赋值。