当前位置：网站首页>"Basic knowledge of PHP" implement mathematical operations in PHP

"Basic knowledge of PHP" implement mathematical operations in PHP

2022-07-27 08:06:00 【Go home at night】

Functional requirements

Use PHP The code implements simple mathematical operations , for example ： Calculate and display separately 220 + 220、2 * 3 + 25 / 5 - 4、2 * (3 + 25) / 5 -4 Value

The sample code

<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>PHP Realize mathematical operations in </title>

</head>

<body>

<?php

  echo 220 + 220;           # 440

  echo 2 * 3 + 25 / 5 - 4;  # 7

  echo 2 * (3 + 25) / 5 -4; # 7.2

?>

</body>

</html>

Running results

The code analysis

echo 220 + 220;： take 220+220 Result “440”, adopt echo Statements are displayed on the page , After the output is completed, execute the next echo Statement output information “7”, At this time, the result displays the statement immediately after the output of the previous one , So the page will 3 The segment results are displayed on the same line and output in the page .

The sample code - Modify the line wrapping display of each result

<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>PHP Realize mathematical operations in </title>

</head>

<body>

<?php

  echo "220 + 220";         # 440

  echo "<br />";

  echo 2 * 3 + 25 / 5 - 4;  # 7

  echo "<br />";

  echo 2 * (3 + 25) / 5 -4; # 7.2

?>

</body>

</html>

Running results