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PHP - how to create a newline character?

In PHP I am trying to create a newline character: 15 Answers 15 ...
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What is the most efficient/elegant way to parse a flat table into a tree?

... Now that MySQL 8.0 supports recursive queries, we can say that all popular SQL databases support recursive queries in standard syntax. WITH RECURSIVE MyTree AS ( SELECT * FROM MyTable WHERE ParentId IS NULL UNION ALL SELECT m.* FROM MyTABLE AS m JOIN MyTree AS t ON m.ParentI...
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How to get a cross-origin resource sharing (CORS) post request working

... I finally stumbled upon this link "A CORS POST request works from plain javascript, but why not with jQuery?" that notes that jQuery 1.5.1 adds the Access-Control-Request-Headers: x-requested-with header to all CORS requests....
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您好,如果我想设置如果到某个时间就显示文字,怎么做 - App Inventor 2 中...

... 获取当前时间和格式化,参考:https://bbs.tsingfun.com/forum.php?mod=viewthread&tid=1534&fromguid=hot& ... 感觉还是不是很懂App Inventor 2  发表于 2024-03-22 19:09 获取当前时间和格式化,参考:https://bbs.tsingfun.com/forum.php?mod=viewthre...
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How can I see the request headers made by curl when sending a request to the server?

...ine command named curl was meant or the whole cURL library. The following PHP code using cURL library uses first parameter as HTTP method (e.g. "GET", "POST", "OPTIONS") and second parameter as URL. <?php $ch = curl_init(); $f = tmpfile(); # will be automatically removed after fclose() curl_se...
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PHP regular expressions: No ending delimiter '^' found in

... PHP regex strings need delimiters. Try: $numpattern="/^([0-9]+)$/"; Also, note that you have a lower case o, not a zero. In addition, if you're just validating, you don't need the capturing group, and can simplify the rege...
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Fast way to get image dimensions (not filesize)

...r if it reads the whole data for that though. See the manpage of exiv2 for all supported image formats. head -n1 will give you the dimensions for PPM, PGM formats. For formats popular on the web, both exiv2 and identify will do the job. Depending on the use-case you may need to write your own scri...
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How do you get a timestamp in JavaScript?

...nd it returns the timestamp (without any alteration). Details: On almost all current browsers you can use Date.now() to get the UTC timestamp in milliseconds; a notable exception to this is IE8 and earlier (see compatibility table). You can easily make a shim for this, though: if (!Date.now) { ...
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Set a cookie to never expire

... All cookies expire as per the cookie specification, so this is not a PHP limitation. Use a far future date. For example, set a cookie that expires in ten years: setcookie( "CookieName", "CookieValue", time() + (10 * 3...
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Strtotime() doesn't work with dd/mm/YYYY format

I really like the strtotime() function, but the user manual doesn't give a complete description of the supported date formats. strtotime('dd/mm/YYYY') doesn't work, it works only with mm/dd/YYYY format. ...