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How to check if PHP array is associative or sequential?

PHP treats all arrays as associative, so there aren't any built in functions. Can anyone recommend a fairly efficient way to check if an array contains only numeric keys? ...
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`static` keyword inside function?

... found some things I hadn't seen before. I did some initial looking in the php manual, but it didn't explain these examples. ...
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PHP - iterate on string characters

...ated array foreach ($array as $char) { echo $char; } You can check the PHP docs for more information: str_split share | improve this answer | follow | ...
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Declaration of Methods should be Compatible with Parent Methods in PHP

What are possible causes of this error in PHP? Where can I find information about what it means to be compatible ? 5 Answe...
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How to search by key=>value in a multidimensional array in PHP

...lue; the ampersand & is crucial. FYI: If you have an older version of PHP then you have to specify the pass-by-reference part in the call to search_r rather than in its declaration. That is, the last line becomes search_r($subarray, $key, $value, &$results). ...
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How to prevent XSS with HTML/PHP?

How do I prevent XSS (cross-site scripting) using just HTML and PHP? 9 Answers 9 ...
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Are PHP include paths relative to the file or the calling code?

I'm having trouble understanding the ruleset regarding PHP relative include paths. If I run file A.PHP- and file A.PHP includes file B.PHP which includes file C.PHP, should the relative path to C.PHP be in relation to the location of B.PHP, or to the location of A.PHP? That is, does it matter whic...
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Are PHP Variables passed by value or by reference?

Are PHP variables passed by value or by reference? 14 Answers 14 ...
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Copy entire contents of a directory to another using php

...ing recursively I found in this note on the copy documentation page: <?php function recurse_copy($src,$dst) { $dir = opendir($src); @mkdir($dst); while(false !== ( $file = readdir($dir)) ) { if (( $file != '.' ) && ( $file != '..' )) { if ( is_dir($s...
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BIO与NIO、AIO的区别(这个容易理解) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...于事件驱动思想来完成的,其主要想解决的是BIO的大并发问题: 在使用同步I/O的网络应用中,如果要同时处理多个客户端请求,或是在客户端要同时和多个服务器进行通讯,就必须使用多线程来处理。也就是说,将每一个客户...