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How do I (or can I) SELECT DISTINCT on multiple columns?

...would qualify as "distinct" (though looking identical to the human eye): (123, NULL) (123, NULL) Also passes in a unique index and almost anywhere else, since NULL values do not compare equal according to the SQL standard. See: Create unique constraint with null columns OTOH, GROUP BY, DISTIN...
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Symfony 2 EntityManager injection in service

... tuning would look like this: 1. Use in your services or Controller <?php namespace Test\CommonBundle\Services; use Doctrine\ORM\EntityManagerInterface; class UserService { private $userRepository; // use custom repository over direct use of EntityManager // see step 2 publi...
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Do checkbox inputs only post data if they're checked?

... @beeglebug What you're describing is how PHP handles names and values, the [] suffix is not a part of the HTML specification and browsers do not treat it specially. Without the [] PHP will only allow access to a single value (the last value) instead of all values. ...
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What is the best place for storing uploaded images, SQL database or disk file system? [closed]

...the rest of your app. Then your img tags would reference "my_website/image.php?img_id=55" instead of "my_website/avatar.png", and your image.php script would, after verifying your credentials and parsing the id you hand it, return the actual image. That way, the image is only viewable by the proper ...
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Why am I seeing an “origin is not allowed by Access-Control-Allow-Origin” error here? [duplicate]

...ot the case you cannot use jsonp and you MUST rely on a server side proxy (PHP, ASP, etc.). There are plenty of guides related to this topic, just google it! share | improve this answer | ...
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Difference between var_dump,var_export & print_r

...2] => 42 [3] => Array ([0] => 42) ) var_export prints valid php code. Useful if you calculated some values and want the results as a constant in another script. Note that var_export can not handle reference cycles/recursive arrays, whereas var_dump and print_r check for these. var_exp...
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Python Charts库(Highcharts API的封装) - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...n生成Highcharts脚本Highcharts中文网:http: v1 hcharts cn demo index php?p=1 charts库实际是对调用Highcharts API 进行封装,通过python生成Highcharts脚本 Highcharts中文网:http://v1.hcharts.cn/demo/index.php?p=10 Highcharts官网:http://api.highcharts.com/highcharts/title ...
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How do I get the fragment identifier (value after hash #) from a URL?

... You may do it by using following code: var url = "www.site.com/index.php#hello"; var hash = url.substring(url.indexOf('#')+1); alert(hash); SEE DEMO share | improve this answer | ...
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Stop setInterval

...iv,3000); }); function updateDiv(){ $.ajax({ url: 'getContent.php', success: function(data){ $('.square').html(data); }, error: function(){ clearInterval(interval); // stop the interval $.playSound('oneday.wav'); $(...
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Can a class extend both a class and implement an Interface

Can a class extend both an interface and another class in PHP? Basically I want to do this: 3 Answers ...