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List of Big-O for PHP functions
After using PHP for a while now, I've noticed that not all built-in PHP functions are as fast as expected. Consider these two possible implementations of a function that finds if a number is prime using a cached array of primes.
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How do I check if a string contains a specific word?
...", we can't use simpler constructs like !strpos($a, 'are').
Edit:
Now with PHP 8 you can do this:
if (str_contains('How are you', 'are')) {
echo 'true';
}
RFC
str_contains
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How to set HTTP headers (for cache-control)?
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You can set the headers in PHP by using:
<?php
//set headers to NOT cache a page
header("Cache-Control: no-cache, must-revalidate"); //HTTP 1.1
header("Pragma: no-cache"); //HTTP 1.0
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date...
How to retrieve Request Payload
I'm using PHP , ExtJS and ajax store .
2 Answers
2
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How do I see the extensions loaded by PHP?
It's got to be somewhere in the phpinfo() dump, but I just don't know where. Is it supposed to be under the "Additional Modules" section? Somewhere else? I'm trying to figure out why some extensions don't appear to be loaded, but I don't even know where I should be looking.
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MySQL: determine which database is selected?
... currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected").
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What are some uses of template template parameters?
I've seen some examples of C++ using template template parameters (that is templates which take templates as parameters) to do policy-based class design. What other uses does this technique have?
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Find files containing a given text
...nt to return file name (and the path to the file) for every file of type .php|.html|.js containing the case-insensitive string "document.cookie" | "setcookie"
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What does the Reflect object do in JavaScript?
...by the draft document found on the wiki,
http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts
We get the line about "single ordinary object" which it clarifies in the draft. It also has the function definitions.
The wiki should be reliable since you can find a link to it from the ...
Formatting numbers (decimal places, thousands separators, etc) with CSS
...avascript once it's in the DOM or format it via your language server-side (PHP/ruby/python etc.)
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