PHP curl使用实例_php实例
概述
本博客的前面两篇文章:curl和libcurl简介以及PHP中使用curl对PHP中curl的使用做了简单介绍,但是PHP中curl的使用却并不简单,尤其是curl的各种配置项,本篇文章会讲解几个PHP的实例,以便大家更好的理解curl。
实例:抓取页面
使用curl抓取页面相对来说比较简单,但是这里有一点需要注意的是,curl默认会将抓取的页面直接输出到浏览器。然而,我们经常遇到的情况是获取抓取的内容,对内容做一定的处理之后再进行操作。因此,这里写出两种不同的情况。
直接输出到浏览器
$url="www.baidu.com";
$ch=curl_init();
curl_setopt($ch,CURLOPT_URL,$url);
curl_exec($ch);
curl_close($ch);
?>
运行上面这段代码,我们会直接看到百度首页。
不直接输出到浏览器
如果我们不想让curl抓取的内容直接输出到浏览器,那么就需要设置curl的“CURLOPT_RETURNTRANSFER”为true,这样curl抓取的内容会作为curl_exec()函数的返回值出现。
$url="www.baidu.com";
$content='';
$ch=curl_init();
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,TRUE);
/*
*根据手册来看,好像PHP5.1.3以前的版本还需要配合CURLOPT_BINARYTRANSFER一起使用,
*但是5.1.3以后的版本中,该配置项已经被废弃了。
*/
//curl_setopt($ch, CURLOPT_BINARYTRANSFER,TRUE);
$content=curl_exec($ch);
var_dump($content);
curl_close($ch);
?>
运行代码,我们可以看到页面输出了获取的网页源码。

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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

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

Hot Topics

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Validator can be created by adding the following two lines in the controller.
