如何读取<img>里的title
在下面的函数中,读取了src,请问如何再读取里的title
function get_pic_list($content='')
{
$pattern="//";
preg_match_all($pattern,$content,$match);
$arr_pic = array();
$i = 0;
foreach($match[1] as $imgsrc)
{
$arr_pic[$i]['src'] = $imgsrc;
$i++;
}
return $arr_pic;
}
回复讨论(解决方案)
看看是否这样
function get_pic_list($content=''){ $pattern="/<img src="/static/imghw/default1.png" data-src="/assets/ico_set.gif" class="lazy" .*?src=[\'|\"](.*?(?:[\.gif|\.jpg]))[\'|\"].*?title=[\'|\"](.*?)[\'|\"].*?[\/]? alt="如何读取<img>里的title" >/"; preg_match_all($pattern,$content,$match); $arr_pic = array(); $i = 0; for($i=0,$len=count($match[1]); $i<$len; $i++){ $arr_pic[$i]['src'] = $match[1][$i]; $arr_pic[$i]['title'] = $match[2][$i]; } return $arr_pic;}$content =<<<TXT<a href="#" class="drop_toggle btn_1 " rel='nofollow'><span> <img src="/static/imghw/default1.png" data-src="/assets/ico_set.gif" class="lazy" alt="" title="title1" />管理菜单<img src="/static/imghw/default1.png" data-src="/assets/arrow_down.gif" class="lazy" alt="" title="title2" /></span></a>TXT;$result = get_pic_list($content);print_r($result);
Array( [0] => Array ( [src] => /assets/ico_set.gif [title] => title1 ) [1] => Array ( [src] => /assets/arrow_down.gif [title] => title2 ))
调用后,显示不正确,我本来上传了很多图片,但是只显示出来两张,而且显示出来这两张我用查看源码时,title的值为空。
在下面的调用页面的JS是不是也要做修改??怎么改??
<script> <br /> $(document).ready(function () { <br /> $(".colorboxEx").each(function (i, el) { <br /> $(el).justifiedGallery({rel: 'gal' + i}).on('jg.complete', function () { <br /> $(this).find('a').colorbox({ <br /> maxWidth : '80%', <br /> maxHeight : '80%', <br /> opacity : 0.8, <br /> transition : 'elastic', <br /> current : '' <br /> }); <br /> }); <br /> }); <br /> }); <br /> </script>
你是否每张图片都有title标记?并且title是放在src后面。
可能不是JS的事,因为我把那段JS删掉,也是一样只显示两张没有title值的图片
没有每张都title,有些有,有些没有
加上title试试。没有的加上title=""
刚刚加上了,也只显示一部分,我试了一下,分别把title的值设为1,2,3,4,5,6,7,8,但是只显示了2,4,6,8
是隔一个显示一个
如果不确定是否每张图都有title标记,需要二次正则获取。
修改如下:
function get_pic_list($content=''){ $pattern="/<img src="/static/imghw/default1.png" data-src="/assets/ico_set.gif" class="lazy" .*?src=[\'|\"](.*?(?:[\.gif|\.jpg]))[\'|\"].*? alt="如何读取<img>里的title" >/"; preg_match_all($pattern,$content,$match); $arr_pic = array(); $i = 0; for($i=0,$len=count($match[1]); $i<$len; $i++){ $arr_pic[$i]['src'] = $match[1][$i]; preg_match('/title=[\'|\"](.*?)[\'|\"]/', $match[0][$i], $match1); $arr_pic[$i]['title'] = isset($match1[1])? $match1[1] : ''; } return $arr_pic;}$content =<<<TXT<a href="#" class="drop_toggle btn_1 " rel='nofollow'><span> <img src="/static/imghw/default1.png" data-src="/assets/ico_set.gif" class="lazy" alt="" title="title1" />管理菜单<img src="/static/imghw/default1.png" data-src="/assets/arrow_down.gif" class="lazy" alt="" title="title2" /> <img src="/static/imghw/default1.png" data-src="/assets/arrow_down123.gif" class="lazy" alt="" /></span></a>TXT;$result = get_pic_list($content);print_r($result);
Array( [0] => Array ( [src] => /assets/ico_set.gif [title] => title1 ) [1] => Array ( [src] => /assets/arrow_down.gif [title] => title2 ) [2] => Array ( [src] => /assets/arrow_down123.gif [title] => ))
如果还有问题,可以把$content发出来看看。
可以了,谢谢

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

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

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

The enumeration function in PHP8.1 enhances the clarity and type safety of the code by defining named constants. 1) Enumerations can be integers, strings or objects, improving code readability and type safety. 2) Enumeration is based on class and supports object-oriented features such as traversal and reflection. 3) Enumeration can be used for comparison and assignment to ensure type safety. 4) Enumeration supports adding methods to implement complex logic. 5) Strict type checking and error handling can avoid common errors. 6) Enumeration reduces magic value and improves maintainability, but pay attention to performance optimization.

Session hijacking can be achieved through the following steps: 1. Obtain the session ID, 2. Use the session ID, 3. Keep the session active. The methods to prevent session hijacking in PHP include: 1. Use the session_regenerate_id() function to regenerate the session ID, 2. Store session data through the database, 3. Ensure that all session data is transmitted through HTTPS.

The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

RESTAPI design principles include resource definition, URI design, HTTP method usage, status code usage, version control, and HATEOAS. 1. Resources should be represented by nouns and maintained at a hierarchy. 2. HTTP methods should conform to their semantics, such as GET is used to obtain resources. 3. The status code should be used correctly, such as 404 means that the resource does not exist. 4. Version control can be implemented through URI or header. 5. HATEOAS boots client operations through links in response.

In PHP, exception handling is achieved through the try, catch, finally, and throw keywords. 1) The try block surrounds the code that may throw exceptions; 2) The catch block handles exceptions; 3) Finally block ensures that the code is always executed; 4) throw is used to manually throw exceptions. These mechanisms help improve the robustness and maintainability of your code.

The main function of anonymous classes in PHP is to create one-time objects. 1. Anonymous classes allow classes without names to be directly defined in the code, which is suitable for temporary requirements. 2. They can inherit classes or implement interfaces to increase flexibility. 3. Pay attention to performance and code readability when using it, and avoid repeatedly defining the same anonymous classes.
