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PHP基础1作业08-21
theYon的博客
Original
772 people have browsed it

PHP基础1

主要知识点

1)如果文档中只有php代码,必须将结束标签删除
2)echo print 
功能是将内容以字符串的形式输出到浏览器 
echo 直接输出无返回值 
print 输出成功并返回1 
3)
a.必须用 开始 后必须是字母或下划线,后面可以跟字母,不能有特殊字符 
c.严格区分大小写 
d.函数是不区分大小写

笔记

微信图片_20180822201906.jpg

微信图片_20180822201912.jpg


代码

<?php
header("Content-type: text/html; charset=utf-8");
$title = '94我';

echo $title;
$arr = [
    'name' => 'the',
    'grade' => 99,
    'city' => 'DG'
];

echo '<pre>'.print_r($arr,true);
echo '<br>';

$test = '我是字符串';
$test1 = $test.'en';
$test2 = '我\\是\\谁';
$test3 = '哈哈\\\'嘻嘻\'';
$test4 = '$test+yes';
$test5 = '{$test}+yes';
$test6 = "{$test},为什么呢";

echo $test,'<br>',$test1,'<br>',$test2,'<br>',$test3,'<br>',$test4,'<br>',$test5,'<br>';

echo  <<< "HEREDOC"
"$test6" \n  \r \t 
HEREDOC;


echo <<< 'NOWDOC'
{$test6} \n  \r \t
<p><a href="">Hello World</a></p>
NOWDOC;

echo <<<EOT
My name is "$test". {$arr['name']}
EOT;

运行结果

微信图片_20180822224400.png

总结

    通过课程学习,初次接触PHP,了解其基本规则以及用法,不过还得认真复习下今天的课程,消化该基础用法

Correction status:qualified

Teacher's comments:注意:heredoc和nowdoc与前面的<<<之间尽量不要留空格
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