為什么，會報錯
$love = "I love you!";
$string1="慕課網(wǎng),$love";
$string2='慕課網(wǎng),$love';
$string3="conb,$like";
echo $string1;
echo "
";
echo $string2;
echo "
";
echo $string3;
?>
結(jié)果
Notice: Undefined variable: like in /54/750/IGfP/index.php on line 6
慕課網(wǎng),I love you!
慕課網(wǎng),$love
conb,
怎么會報錯
2016-11-26
$like這個變量你沒有賦值，系統(tǒng)找不到，所以會報錯；