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Bogus foreign key constraint fail
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On demand, now as an answer...
When using MySQL Query Browser or phpMyAdmin, it appears that a new connection is opened for each query (bugs.mysql.com/bug.php?id=8280), making it neccessary to write all the drop statements in one query, eg.
SET FOREIGN_KEY_CHECKS=0;
DROP TABLE my_first_...
使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
...该资产。特别是，MITVRHelper 无法使用资产文件。解决这个问题的方法是将资产文件复制到手机存储的另一部分，并让 MITVRHelper 访问副本。
更尴尬的是：标准 App Inventor 不包含复制文件的操作。幸运的是，由于 Taifun Bär（谢谢 Tai...
How to get WordPress post featured image URL
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Check the code below and let me know if it works for you.
<?php if (has_post_thumbnail( $post->ID ) ): ?>
<?php $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' ); ?>
<div id="custom-bg" style="background-image: ur...
Prevent nginx 504 Gateway timeout using PHP set_time_limit()
I am getting 504 timeouts message from nginx when my PHP script is running longer than usual. set_time_limit(0) does not seem to prevent that! Does it not work when running php5-fpm on nginx? If so, whats the proper way of setting the time limit?
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How to determine the memory footprint (size) of a variable?
Is there a function in PHP (or a PHP extension) to find out how much memory a given variable uses? sizeof just tells me the number of elements/properties.
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Difference between “include” and “require” in php
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You find the differences explained in the detailed PHP manual on the page of require:
require is identical to include except upon failure it will also produce a fatal E_COMPILE_ERROR level error. In other words, it will halt the script whereas include only emits a warning...
How to send a header using a HTTP request through a curl call?
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In PHP:
curl_setopt($ch, CURLOPT_HTTPHEADER, array('HeaderName:HeaderValue'));
or you can set multiple:
curl_setopt($ch, CURLOPT_HTTPHEADER, array('HeaderName:HeaderValue', 'HeaderName2:HeaderValue2'));
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How do I match any character across multiple lines in a regular expression?
..., but there should be a modifier that you can add to the regex pattern. In PHP it is:
/(.*)<FooBar>/s
The s at the end causes the dot to match all characters including newlines.
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Call to undefined function curl_init().? [duplicate]
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If you're on Windows:
Go to your php.ini file and remove the ; mark from the beginning of the following line:
;extension=php_curl.dll
After you have saved the file you must restart your HTTP server software (e.g. Apache) before this can take effect.
Fo...
Mac下PHP的MongoDB扩展安装 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Mac下PHP的MongoDB扩展安装在mac下面如何安装MongoDB呢，其实方法很简单。按照官方的三种方法安装就可以了。我这里是针对PHP的安装。多了一个PHP的MongoDB扩展安装。A...在mac下面如何安装MongoDB呢，其实方法很简单。按照官方的三种...