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How to trigger XDebug profiler for a command line PHP script?
...your scripts but only for a few special cases without always changing your PHP configuration.
8 Answers
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Is PHP's count() function O(1) or O(n) for arrays?
Does count() really count the all the elements of a PHP array, or is this value cached somewhere and just gets retrieved?
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开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...创新。可操作性与可观测性Mosquitto 提供了基本的日志和调试功能，用于监控代理状态和故障排除。然而，它缺乏先进的管理和监控功能，使用户难以从其运行状态获得更多洞察进行性能优化。EMQX 通过 HTTP API 和 Dashboard 提供丰富...
App Inventor 2 与 Mixly（米思齐）MixIO 平台数据通信方案完整调研 - 创客...
...发正常3. AI2 端再接入：硬件跑通后，再用 AI2 对接，逐步调试4. 注意数据格式：MixIO 推送和返回的数据都是字符串类型，AI2 端注意类型转换5. 控制数据频率：MixIO 限制最大 5 次/500ms，编程时建议间隔 >=2 秒/次6. 网络安全：如...
“date(): It is not safe to rely on the system's timezone settings…”
I got this error when I requested to update the PHP version from 5.2.17 to PHP 5.3.21 on the server.
24 Answers
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PHP Pass variable to next page
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You can add the variable in the link to the next page:
<a href="page2.php?varname=<?php echo $var_value ?>">Page2</a>
This will create a GET variable.
Another way is to include a hidden field in a form that submits to page two:
<form method="get" action="page2.php">
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nginx showing blank PHP pages
I have setup an nginx server with php5-fpm. When I try to load the site I get a blank page with no errors. Html pages are served fine but not php. I tried turning on display_errors in php.ini but no luck. php5-fpm.log is not producing any errors and neither is nginx.
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In PHP what does it mean by a function being binary-safe?
In PHP what does it mean by a function being binary-safe ?
3 Answers
3
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PHP memory profiling
What's a good way to profile a PHP page's memory usage? For example, to see how much memory my data is using, and/or which function calls are allocating the most memory.
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Difference between float and double in php?
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There is no difference in PHP. float, double or real are the same datatype.
At the C level, everything is stored as a double.
The real size is still platform-dependent.
See the manual for more details:
http://www.php.net/manual/en/language.types.flo...