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What's the difference between echo, print, and print_r in PHP?
...en debugging
No return value
var_export()
Outputs a human-readable and PHP-executable representation of any one value
Accepts not just strings but other types including arrays and objects, formatting them to be readable
Uses a different output format to both print_r() and var_dump() - resulting ...
what is faster: in_array or isset? [closed]
... {
$v = rand(1, 1000000);
$a[$v] = $v;
}
echo "Size: ", count($a), PHP_EOL;
$start = microtime( true );
for ($i = 0; $i < 10000; ++$i) {
isset($a[rand(1, 1000000)]);
}
$total_time = microtime( true ) - $start;
echo "Total time: ", number_format($total_time, 6), PHP_EOL;
$start = m...
How can I sort arrays and data in PHP?
How do I sort an array in PHP?
How do I sort a complex array in PHP?
How do I sort an array of objects in PHP?
12 Ans...
Check to see if a string is serialized?
... unserialize raw user data since it can be used as an attack vector. OWASP:PHP_Object_Injection
– ArtBIT
Sep 1 '17 at 18:56
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List of Big-O for PHP functions
After using PHP for a while now, I've noticed that not all built-in PHP functions are as fast as expected. Consider these two possible implementations of a function that finds if a number is prime using a cached array of primes.
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How does Facebook Sharer select Images and other metadata when sharing my URL?
...t of facebookexternalhit/1.1 (+https://www.facebook.com/externalhit_uatext.php), will access your page and cache the meta information. To force Facebook servers to clear the cache, use the Facebook Url Debugger / Linter Tool that they launched in June 2010 to refresh the cache and troubleshoot any ...
How to search by key=>value in a multidimensional array in PHP
...lue; the ampersand & is crucial.
FYI: If you have an older version of PHP then you have to specify the pass-by-reference part in the call to search_r rather than in its declaration. That is, the last line becomes search_r($subarray, $key, $value, &$results).
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Get URL query string parameters
...RY_STRING'] contains the data that you are looking for.
DOCUMENTATION
php.net: $_SERVER - Manual
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Best practice multi language website
... of calling functions for every translation operation, which as we know in PHP is expensive, we define our base files with placeholders, then use a pre-processor to cache those files (we store the file modification time to make sure we're serving the latest content at all times).
The Translation Ta...
What is the best method to merge two PHP objects?
We have two PHP5 objects and would like to merge the content of one into the second. There are no notion of subclasses between them so the solutions described in the following topic cannot apply.
...