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instantiate a class from a variable in PHP?

...r as I can tell) must declare the full namespace path of a class. MyClass.php namespace com\company\lib; class MyClass { } index.php namespace com\company\lib; //Works fine $i = new MyClass(); $cname = 'MyClass'; //Errors //$i = new $cname; //Works fine $cname = "com\\company\\lib\\".$cname...
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Android应用内存泄露分析、改善经验总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...可以梳理总结出来作为分享。 原则   对于性能问题,分析和改善有必要遵循以下原则: 一切看数据说话,不能跟着感觉走,感觉哪有问题就去改,很有可能会适得其反; 性能优化是一个持续的过程,需要不断...
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分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...一台服务器来提供数据服务的时候,我会遇到如下的两个问题:1)一台服务器的性能不足以提供足够的能力服务于所有的网络...当我们在生产线上用一台服务器来提供数据服务的时候,我会遇到如下的两个问题: 1)一台服务...
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Convert a PHP object to an associative array

... (what you asked for) it's fine. Also see this in-depth blog post: Fast PHP Object to Array conversion share | improve this answer | follow | ...
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Create a CSV File for a user in PHP

...ment; filename=file.csv"); function outputCSV($data) { $output = fopen("php://output", "wb"); foreach ($data as $row) fputcsv($output, $row); // here you can change delimiter/enclosure fclose($output); } outputCSV(array( array("name 1", "age 1", "city 1"), array("name 2", "age 2", "c...
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AJAX POST and Plus Sign ( + ) — How to Encode?

I'm POSTing the contents of a form field via AJAX to a PHP script and using JavaScript to escape(field_contents) . The problem is that any plus signs are being stripped out and replaced by spaces. How can I safely 'encode' the plus sign and then appropriately 'decode' it on the PHP side? ...
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Sending multipart/formdata with jQuery.ajax

I've got a problem sending a file to a serverside PHP-script using jQuery's ajax-function. It's possible to get the File-List with $('#fileinput').attr('files') but how is it possible to send this Data to the server? The resulting array ( $_POST ) on the serverside php-script is 0 ( NULL ) when us...
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How do you Encrypt and Decrypt a PHP String?

...s question made this mistake; as do many cryptography libraries written in PHP. You should avoid implementing your own cryptography, and instead use a secure library written by and reviewed by cryptography experts. Update: PHP 7.2 now provides libsodium! For best security, update your systems to us...
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Tips for debugging .htaccess rewrite rules

... and does what you intend with a fully range of test URIs. See regexpCheck.php below for a simple script that you can add to a private/test directory in your site to help you do this. I've kept this brief rather than pretty. Just past this into a file regexpCheck.php in a test directory to use it ...
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Detect Browser Language in PHP

I use the following PHP script as index for my website. 12 Answers 12 ...