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php基本语法字符串-2018年8月22日
兔子的博客
Original
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基本的语法

实例

<?php
$HE="hello world \n";
$SE="233";
echo "$HE,$SE";//双引号能解析变量名称
echo '$HE';//单引号只能是字符串
//HEREDOC相当于双引号
//nowdoc相当于单引号解析字符串
echo <<< "HEREDOC"
{$HE}
HEREDOC;
echo <<< 'NOWDOC'
{$HE}
NOWDOC;
?>

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注意空格 有些地方不能写注释 会影响代码

8.22.png

Correction status:qualified

Teacher's comments:注意:heredoc和nowdoc跟前面的<<<中间不要留空格!
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