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Getting DOM elements by classname
...tains(concat(' ', normalize-space(@class), ' '), ' $classname ')]");
Basically, all we do here is normalize the class attribute so that even a single class is bounded by spaces, and the complete class list is bounded in spaces. Then append the class we are searching for with a space. This way we ar...
Real escape string and PDO [duplicate]
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You should use PDO Prepare
From the link:
Calling PDO::prepare() and PDOStatement::execute() for statements that will be issued multiple times with different parameter values optimizes the performance of your application by allowing the driver to negotiate client and/...
How to check for null in Twig?
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In addition, unlike the PHP isset() function, is defined will return true if a variable is defined and it's value is null.
– Pavel Petrov
Sep 19 '17 at 7:59
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Swap key with value JSON
...sers/markus/Entwicklung/IT1_Beleg/public/es6/vokabeltrainer.js: Unexpected token (53:45) 51 | if (btoa) { 52 | entries = Object.entries(entries) > 53 | .reduce((obj, [key, value]) => ({...obj, [value]: key}), {}); | ...
MySQL: Fastest way to count number of rows
...olumn indexes, so it will be the best result. Mysql with MyISAM engine actually stores row count, it doensn't count all rows each time you try to count all rows. (based on primary key's column)
Using PHP to count rows is not very smart, because you have to send data from mysql to php. Why do it whe...
How to validate phone numbers using regex
...trying to put together a comprehensive regex to validate phone numbers. Ideally it would handle international formats, but it must handle US formats, including the following:
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MySQL offset infinite rows
I would like to construct a query that displays all the results in a table, but is offset by 5 from the start of the table. As far as I can tell, MySQL's LIMIT requires a limit as well as an offset. Is there any way to do this?
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C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
... occurs when a program attempts to access a memory location that it is not allowed to access, or attempts to access a memory location in a way that is not allowed (e.g., attempts to write to a read-only location, or to overwrite part of the operating system). Systems based on processors like the Mot...
Getting an “ambiguous redirect” error
...ally the same error:
$ echo hello >
bash: syntax error near unexpected token `newline`
$ echo hello > ${NONEXISTENT}
bash: ${NONEXISTENT}: ambiguous redirect
$ echo hello > "${NONEXISTENT}"
bash: : No such file or directory
Adding quotes around the variable seems to be a good way to de...
Do I need Content-Type: application/octet-stream for file download?
...ht now; maybe later).
RFC 2616 also mentions the possibility of extension tokens, and these days most browsers recognise inline to mean you do want the entity displayed if possible (that is, if it's a type the browser knows how to display, otherwise it's got no choice in the matter). This is of cou...