PHP
PHP（PHP：Hypertext Preprocessor）是一種開源的通用電腦語言，尤其適用於網路開發並可嵌入HTML中使用。PHP的語法借鑑吸收C語言、Java和Perl等流行電腦語言的特點，易於一般程式設計師學習。PHP的主要目標是允許網路開發人員快速編寫動態頁面，但PHP也被用於其他很多領域。
PHP是拉斯姆斯·勒多夫(Rasmus Lerdorf)為了要維護個人網頁，而用c語言開發的一些CGI工具程式集，來取代原先使用的Perl程式。
Example #1 第一个 PHP 脚本：hello.php
<html>
<head>
<title>PHP 测试</title>
</head>
<body>
<?php echo '<p>Hello World</p>'; ?>
</body>
</html>
PHP範例
http://cst.aiplab.net/vote2017/
testlog.php
<?php
/*
Copyright (c) 2008-2012, www.redips.net All rights reserved.
Code licensed under the BSD License: http://www.redips.net/license/
*/
/**
* Logging class:
* - contains lfile, lwrite and lclose public methods
* - lfile sets path and name of log file
* - lwrite writes message to the log file (and implicitly opens log file)
* - lclose closes log file
* - first call of lwrite method will open log file implicitly
* - message is written with the following format: [d/M/Y:H:i:s] (script name) message
*/
class Logging {
// declare log file and file pointer as private properties
private $log_file, $fp;
// set log file (path and name)
public function lfile($path) {
$this->log_file = $path;
}
// write message to the log file
public function lwrite($message) {
// if file pointer doesn't exist, then open log file
if (!is_resource($this->fp)) {
$this->lopen();
}
// define script name
$script_name = pathinfo($_SERVER['PHP_SELF'], PATHINFO_FILENAME);
// define current time and suppress E_WARNING if using the system TZ settings
// (don't forget to set the INI setting date.timezone)
$time = @date('[d/M/Y:H:i:s]');
// write current time, script name and message to the log file
fwrite($this->fp, "$time ($script_name) $message" . PHP_EOL);
}
// close log file (it's always a good idea to close a file when you're done with it)
public function lclose() {
fclose($this->fp);
}
// open log file (private method)
private function lopen() {
// in case of Windows set default log file
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
$log_file_default = 'c:/php/logfile.txt';
}
// set default log file for Linux and other systems
else {
$log_file_default = '/tmp/logfile.txt';
}
// define log file from lfile method or use previously set default
$lfile = $this->log_file ? $this->log_file : $log_file_default;
// open log file for writing only and place file pointer at the end of the file
// (if the file does not exist, try to create it)
$this->fp = fopen($lfile, 'a') or exit("Can't open $lfile!");
}
}
?>