preg-match-all

问题 I've some html code and extracted the img src attribute from it. Into the html string there are some img like this: <img src="http://www.pecso.it/wp-content/uploads/2016/12/10_WRAS.png"> I've tried to do this with the following PHP code: $description = wpautop($this->data->description); $description = preg_replace("/\[[^\]]+\]/", '', $description); if (preg_match_all("<img src=(.*?)>", $description, $match)) { echo match; }; and the result is NULL. Can you help me, please? 回答1: Do not use

问题 I am using the following code to match all variables in a script starting with '$', however i would like the results to not contain duplicates, ie be distinct/unique: preg_match_all('/\$[a-zA-Z0-9]+/', $code, $variables); Any advice? 回答1: Use array_unique to remove the duplicates from your output array: preg_match_all('/\$[a-zA-Z0-9]+/', $code, $variables); $variables = array_unique($variables[0]); But I hope you’re not trying to parse PHP with that. Use token_get_all to get the tokens of the

问题 I am trying to match a series of text strings with PCRE on PHP, and am having trouble getting all the matches in between the first and second. If anyone wonders why on Earth I would want to do this, it's because of Doc Comments. Oh, how I wish Zend would make native/plugin functions to read Doc Comments from a PHP file... The following example (plain) text will be used for the problem. It will always be pure PHP code, with only one opening tag at the beginning of the file, no closing. You can

问题 With preg_match_all I want to get class and data-attributes in html. The example below works, but it only returns class names or only data-id content. I want the example pattern to find both class and data-id content. Which regex pattern should I use? Html contents: <!-- I want to: $matches[1] == test_class | $matches[2] == null --> <div class="test_class"> <!-- I want to: $matches[1] == test_class | $matches[2] == 1 --> <div class="test_class" data-id="1"> <!-- I want to: $matches[1] == test

问题 First I'll show you a sample of the code I'm working with: <div class="entry"> <p>Any HTML content could go here!</p> </div> </div><!--/post --> Normally I'd use a regex rule such as the following to look for a prefix and a suffix and grab everything in between: (?<=<div class="entry">).*(?=</div><!--/post -->) However, that doesnt appear to be working as it seems to be pulling the white space in between then following parts instead of the HTML content itself: <div class="entry"> <p> Any help

问题 So I'm trying to grab some images from another site, the problem is each image is on a different page IE: id/1, id/2, id/3 etc etc so far I have the code below which can grab an image from the single URL given using: $returned_content = get_data('http://somedomain.com/id/1/'); but need to make the line above become an array (I guess) so it will grab the image from page 1 then go on to grab the next image on page 2 then page 3 etc etc automatically function get_data($url){ $ch = curl_init();

问题 I'd like to have a regex to match a word, even if there are spaces between the characters. When I want to match the word test , it should match the following: test t est t e s t And so on, but it should not match things like this: tste te ts s tet I have this regex: (t[\s]*e[\s]*s[\s]*t[\s]*) But I don't believe that this one is very efficient. 回答1: Actually, it is the same as t\s*e\s*s\s*t (if the word appears inside a larger string, \bt\s*e\s*s\s*t\b is preferable). This is the only way to

问题 This question already has an answer here : php using curl and preg_match_all (1 answer) Closed 5 years ago . I feel like I am missing something. I am using the following code to pull some numbers from a table. As simple as it looks, I cannot seem to get anything to print. I am placing my code and an example of the table below. Please help me find my error. I want it to print out only the numbers in each cell. //gets the site $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, 'http://site.org');

问题 I have a string in the format: "The quick __grey__ fox jumps over the lazy __brown__ dog." And I want to find and replace any words (or sometimes sentences) between the double underscores. I am currently using preg_match_all in PHP: $pattern = '/__(.*)__/'; This works fine... until it finds two sets of double underscores on the same line, such as in the above example, where it matches "__grey__" and "__brown__" as I want, but also "__grey__ fox jumps over the lazy brown__", which I do not

问题 I've been trying to "parse" some data using a regex, and I feel as if I'm close, but I just can't seem to bring it all home. The data that needs parsing generally looks like this: <param>: <value>\n . The number of params can vary, just as the value can. Still, here's an example: FooID: 123456 Name: Chuck When: 01/02/2013 01:23:45 InternalID: 789654 User Message: Hello, this is nillable, but can be quite long. Text can be spread out over many lines And can start with any number of \n's. It