


php file_get_contents() reads and collects remote file contents_PHP tutorial
Let’s look at the PHP manual about the file_get_contents() function that reads the entire file into a string. It is the same as file(). The difference is that file_get_contents() reads the file into a string.
The file_get_contents() function is the preferred method for reading the contents of a file into a string
The above is a help manual that reads all the contents into the memory at one time. We will also talk about the following examples
_get_contents can read the remote file into a string,
The file line separation is "rn"
explode separates strings by "rn"
The code is as follows | Copy code | ||||
$shadu_url = "http://localhost/ demo.html";
$line_arr = explode("rn",$shadu_str); |
Remote request address, the returned processing result information is a string, each field is separated by ‘|’, and rows are separated by ‘rn’ The content returned respectively is, id, name, time, email
Content example
1|simaopig|2009-04-01|demo@simaopig.com
2|xiaoxiaozi|2009-04-02|demo@xiaoxiaozi.com
代码如下 | 复制代码 |
$shadu_url = "http://localhost/demo.html"; $shadu_str = file_get_contents($shadu_url); $line_arr = explode("rn",$shadu_str); $result = array(); if(empty($line_arr)) { return array(); } foreach($line_arr as $line_str) { $record_arr = explode("|",$line_str); if($record_arr[0] == "-1") { // log continue; } $data = array(); $data['id'] = $record_arr[0]; $data['name'] = $record_arr[1]; $data['time'] = $record_arr[2]; $data['email'] = $record_arr[3]; $result[] = $data; } var_dump($result); |
The code is as follows | Copy code |
$shadu_url = "http://localhost/ demo.html"; $shadu_str = file_get_contents($shadu_url); $line_arr = explode("rn",$shadu_str); $result = array(); if(empty($line_arr)) { return array(); } foreach($line_arr as $line_str) { $record_arr = explode("|",$line_str); if($record_arr[0] == "-1") { // log continue; } $data = array(); $data['id'] = $record_arr[0]; $data['name'] = $record_arr[1]; $data['time'] = $record_arr[2]; $data['email'] = $record_arr[3]; $result[] = $data; } var_dump($result); |
Check the results yourself, haha.
Example 2
Collect the content of html page
代码如下 | 复制代码 |
//全国,判断条件是$REQUEST_URI是否含有html if (!strpos($_SERVER["REQUEST_URI"],".html")) { $page="http://qq.ip138.com/weather/"; $html = file_get_contents($page,'r'); $pattern="/全国主要城市、县当天和未来五天天气趋势预报在线查询(.*?) //正则匹配之间的html preg_match($pattern,$html,$pg); echo ""; //正则替换远程地址为本地地址 $p=preg_replace('//weather/(w+)/index.htm/', 'tq.php/.html', $pg[1]); echo $p; } //省,判断条件是$REQUEST_URI是否含有? else if(!strpos($_SERVER["REQUEST_URI"],"?")){ //yoyo推荐的使用分割获得数据,这里是获得省份名称 $province=explode("/",$_SERVER["REQUEST_URI"]); $province=explode(".",$province[count($province)-1]); $province=$province[0]; //被注释掉的是我自己写出来的正则,感觉写的不好,但效果等同上面 //preg_match('/[^/]+[.(html)]$/',$_SERVER["REQUEST_URI"],$pro); //$province=preg_replace('/.html/','',$pro[0]); $page="http://qq.ip138.com/weather/".$province."/index.htm"; //获取html数据之前先尝试打开页面,防止恶意输入地址导致出错 if (!@fopen($page, "r")) { die("对不起,该地址不存在!点击这里返回"); exit(0); } $html = file_get_contents($page,'r'); $pattern="/五天天气趋势预报(.*?)请输入输入市/si"; preg_match($pattern,$html,$pg); echo ""; //正则替换,获取省份,城市 $p=preg_replace('//weather/(w+)/(w+).htm/', '.html?pro=', $pg[1]); echo $p; } else { //市,通过get传递省份 $pro=$_REQUEST['pro']; $city=explode("/",$_SERVER["REQUEST_URI"]); $city=explode(".",$city[count($city)-1]); $city=$city[0]; //preg_match('/[^/]+[.(html)]+[?]/',$_SERVER["REQUEST_URI"],$cit); //$city=preg_replace('/.html?/','',$cit[0]); $page="http://qq.ip138.com/weather/".$pro."/".$city.".htm"; if (!@fopen($page, "r")) { die("对不起,该地址不存在!点击这里返回"); exit(0); } $html = file_get_contents($page,'r'); $pattern="/五天天气趋势预报(.*?)请输入输入市/si"; preg_match($pattern,$html,$pg); echo ""; //获取真实的图片地址 $p=preg_replace('//image//', 'http://qq.ip138.com/image/', $pg[1]); echo $p; } ?> |

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

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.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Dreamweaver Mac version
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

WebStorm Mac version
Useful JavaScript development tools