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PHP实例说明编写PHP代码的5个好习惯

作者 佚名技术 来源 NET编程 浏览 发布时间 2012-03-16
类和函数的意图。注释表明方法做了什么和为什么做,这会对将来了解代码的意图很有帮助。环境的变化会需要你进行代码修改,这就会让很容易的知道开始时你代码是做什么的。

例6.好习惯:注释函数和类

 

<?php
/**
* The ResultMessage class holds a message that can be returned
* as a result of a process. The message has a severity and
* message.
*
* @author nagood
*
*/
class ResultMessage
{
private $severity;
private $message;

/**
* Constructor for the ResultMessage that allows you to assign
* severity and message.
* @param $sev See {@link getSeverity()}
* @param $msg
* @return unknown_type
*/
public function __construct($sev, $msg)
{
$this->severity = $sev;
$this->message = $msg;
}

/**
* Returns the severity of the message. Should be one
* "Information", "Warning", or "Error".
* @return string Message severity
*/
public function getSeverity()
{
return $this->severity;
}

/**
* Sets the severity of the message
* @param $severity
* @return void
*/
public function setSeverity($severity)
{
$this->severity = $severity;
}

public function getMessage()
{
return $this->message;
}

public function setMessage($msg)
{
$this->message = $msg;
}
}


/*
* Counts the messages with the given severity in the array
* of messages.
*
* @param $messages An array of ResultMessage
* @return int Count of messages with a severity of "Error"
*/
function countErrors($messages)
{
$matchingCount = 0;
foreach($messages as $m) {
if ($m->getSeverity() == "Error") {
$matchingCount++;
}
}
return $matchingCount;
}

$messages = array(new ResultMessage("Error", "This is an error!"),
new ResultMessage("Warning", "This is a warning!"),
new ResultMessage("Error", "This is another error!"));

$errs = countErrors($messages);

echo("There are " . $errs . " errors in the result.\n");

?>

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