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SQL query for finding records where count > 1

...p int(11) not null, dt date not null ); insert into payment values (1,123,55555,'2009-12-12'), (1,123,66666,'2009-12-12'), (1,123,77777,'2009-12-13'), (2,456,77777,'2009-12-14'), (2,456,77777,'2009-12-14'), (2,789,77777,'2009-12-14'), (2,789,77777,'2009-12-14'); select foo.user_id, foo.cnt fro...
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How to combine two strings together in PHP?

...atenate two strings together. Use the concatenation operator . (and .=) In PHP . is the concatenation operator which returns the concatenation of its right and left arguments $data1 = "the color is"; $data2 = "red"; $result = $data1 . ' ' . $data2; If you want to append a string to another string ...
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LEGO EV3 机器人按键控制 · App Inventor 2 中文网

... 界面优化 故障排除 常见问题 解决方案 项目文件结构 版权声明 « 返回LEGO首页 LEGO EV3 机器人按键控制 项目概述 这是一...
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How to encrypt/decrypt data in php?

I'm currently a student and I'm studying PHP, I'm trying to make a simple encrypt/decrypt of data in PHP. I made some online research and some of them were quite confusing(at least for me). ...
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Can you use if/else conditions in CSS?

... your stylesheet with your favourite server-side language. If you're using PHP, serve a style.css.php file, that looks something like this: p { background-position: <?php echo (@$_GET['foo'] == 'bar')? "150" : "4"; ?>px 8px; } In this case, you will however have a performance impact, sinc...
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Page redirect after certain time PHP

There is a certain PHP function for redirecting after some time. I saw it somewhere but can't remember. It's like the gmail redirection after logging in. Please, could anyone remind me? ...
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PHP Remove elements from associative array

I have an PHP array that looks something like this: 9 Answers 9 ...
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The character encoding of the HTML document was not declared

...ur HTML tags and doctype go away. You need to include those in your insert.php file: <!DOCTYPE html PUBLIC"-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="content-type" ...
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How do I send a POST request with PHP?

... CURL-less method with PHP5: $url = 'http://server.com/path'; $data = array('key1' => 'value1', 'key2' => 'value2'); // use key 'http' even if you send the request to https://... $options = array( 'http' => array( 'header' =...
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How can I brew link a specific version?

... If you have installed, for example, php 5.4 it could be switched in the following way to php 5.5: $ php --version PHP 5.4.32 (cli) (built: Aug 26 2014 15:14:01) Copyright (c) 1997-2014 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologie...