PHP - Data Type, 변수, 파라미터, 함수의 사용
Data Type 1. 숫자
<!DOCTYPE html>
<html>
<body>
<h1>Number&Operator(연산자)</h1>
<h2>1+1</h2>
<?php
echo 1+1;
?>
<h2>2-1</h2>
<?php
echo 2-1;
?>
<h2>2*2</h2>
<?php
echo 2*2;
?>
<h2>4/2</h2>
<?php
echo 4/2;
?>
</body>
</html>
Data Type 2. 문자열
<!DOCTYPE html>
<html>
<body>
<h1>String & String Operator</h1>
<?php
echo "Hello \"W\"orld";
?>
<h2>concatenation(결합) operator</h2>
<?php
echo "Hello "."World";
?>
<h2>String length function</h2>
<?php
echo strlen("Hello World");
?>
</body>
</html>
String length function : https://www.php.net/manual/en/function.strlen.php
변수
<!DOCTYPE html>
<html>
<body>
<h1>Variables</h1>
<?php
$name = "leezche";
echo "Lorem ipsum dolor sit amet,
consectetur ".$name." adipisicing elit, sed do
eiusmod tempor incididunt ut labore
et dolore ".$name." magna aliqua.
Ut enim ad minim veniam,
quis nostrud \"egoing\" exercitation
ullamco laboris nisi ut aliquip
ex ea ".$name." commodo consequat.
Duis aute ".$name." irure dolor in reprehenderit
in voluptate velit esse
cillum dolore ".$name." eu fugiat nulla pariatur.
Excepteur ".$name." sint occaecat cupidatat non
proident, sunt in ".$name." culpa qui officia
deserunt mollit ".$name." anim id est laborum.";
?>
</body>
</html>
파라미터
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
안녕하세요. <?php echo $_GET['address']; ?>에 사시는
<?php echo $_GET['name']; ?>님
</body>
</html>
파라미터 예제
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<h1>WEB</h1>
<ol>
<li><a href="index.php?id=HTML">HTML</a></li>
<li><a href="index.php?id=CSS">CSS</a></li>
<li><a href="index.php?id=JavaScript">JavaScript</a></li>
</ol>
<h2>
<?php
echo $_GET ['id'];
?>
</h2>
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
</body>
</html>
함수의 사용 #1 : strlen, nl2br
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>function</title>
</head>
<body>
<h1>Function</h1>
<?php
$str = "Lorem ipsum dolor sit amet, consectetur adipisicing elit.
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.";
echo $str;
?>
<h2>strlen()</h2>
<?php
echo "String Length = ".strlen($str);
?>
<h2>nl2br()</h2>
<?php
echo nl2br($str);
?>
</body>
</html>
strlen : https://www.php.net/manual/en/function.strlen.php
nl2br : https://www.php.net/manual/en/function.nl2br.php
함수의 사용 #2 : file get contents
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<h1>WEB</h1>
<ol>
<li><a href="index.php?id=HTML">HTML</a></li>
<li><a href="index.php?id=CSS">CSS</a></li>
<li><a href="index.php?id=JavaScript">JavaScript</a></li>
</ol>
<h2>
<?php
echo $_GET ['id'];
?>
</h2>
<?php
// echo data/id 값에 해당하는 파일의 내용
echo file_get_contents("data/".$_GET['id']);
?>
</body>
</html>[data/HTML(CSS, JavaScript)]
HTML(CSS, JavaScript) is Lorem ipsum dolor sit amet,
consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
file get contents : https://www.php.net/manual/en/function.file-get-contents.php
