本文实例讲述了PHP使用ob_start生成html页面的方法。分享给大家供大家参考。具体方法分析如下:
ob_start([string output_callback])- 打开输出缓冲区
所有的输出信息不在直接发送到浏览器,而是保存在输出缓冲区里面,可选得回调函数用于处理输出结果信息。
ob_end_flush - 结束(发送)输出缓冲区的内容,关闭输出缓冲区
使用output control 函数可以让自由控制脚本中数据的输出,这在我们想在header之前输出时很有用。
代码如下:
ob_start(); //打开缓冲区
echo "输出n"; //输出
header("头部信息");
ob_end_flush();//输出全部内容到浏览器
?>
个人使用ob多数是在生成静态html的时候,当某个页面不会再刷新,当其他的用户再次浏览此页面时,程序将不会再调用php以及相关的数据库教程。这时候使用ob生成html就是很好的做法。
代码如下:
ob_start();
if(@readfile($tem_path)){ //把指定路径中的内容写入缓存中。如果不存在返回false(就是某个你想转换成html的php文件)
$content= ob_get_contents(); //得到缓存中的内容
$fp = fopen("1.html", "w"); //创建一个文件,并打开,准备写入
fwrite($fp, $content); //把php页面的内容全部写入1.html
}
fclose($fp);
ob_clean();
?>
希望本文所述对大家的PHP程序设计有所帮助。

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

In PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.


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