正则获取网页源码keyword和description ,蛋有点疼
情况一:
<META NAME="description" CONTENT="华尔街债券(bond.wswire.com)是全球第一债券网站,为您提供全球债券市场最迅速最专业的债券资讯和全天候的债券理财、债券评级及报价服务,华尔街债券覆盖交易所债券市场、银行间债券市场、银行同业拆借及公开市场等各方面的债券信息服务。华尔街债券汇聚多家顶级专业机构分析研究报告、每日两次的精确数据分析以及图文并茂的市况报道。"><br /><br /><META NAME="keywords" CONTENT="华尔街,电讯,华尔街电讯,全球债券,国债,债券,债市,企业债,企债,可转债,回购,正回购,赎回,债券公告,利率,金融债,央行,短期融资券,记账式国债,货币政策,财经,汇率,票据,公开市场,稳定收益,公债,柜台交易,银行间债市,同业拆借,债券资讯,融资债,债券理财,债券评级,银行间市场,交易所市场,海外市场,央行票据"><br />
情况二:
<meta name=keywords content="微波炉使用高火档能耗低更节能(图),环保新知,,,微波炉,,,高火,,,节能,,,省电,,"><br /><br /><meta name=description content="微波炉使用高火档能耗低更节能(图)">
注意:可能大小写,还有就是name,和content属性[color=#FF6600] 位置 不一样[/color]
小弟试着写了一下,只能匹配一写网页,不知道有什么问题。大牛请解答,拜谢!
keyword:
<br /> 1.preg_match("/<meta[\s]+name=['\"]keywords['\"] content=['\"](.*)['\"]/isU",$this->tmpHtml,$inarr);<br />2.preg_match("/<meta[\s] content=['\"](.*)['\"] name=['\"]keywords['\"]/isU",$this->tmpHtml,$inarr2);<br /><br />
<br />1.preg_match("/<meta[\s]+name=['\"]description['\"] content=['\"](.*)['\"]/isU",$this->tmpHtml,$inarr);<br />2.preg_match("/<meta[\s]+content=['\"](.*)['\"] name=['\"]description['\"]/isU",$this->tmpHtml,$inarr2);<br /> <br />
说明:一些网页能匹配,一些不能
------解决方案--------------------
不是有个get_meta_tags函数么
------解决方案--------------------
+1,可以返回一个meta的数组的,再提取需要的就是了

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