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Fastest way to check if a string is JSON in PHP?

... It's worth noting that this works correctly in theory. Unfortunately PHP's json_decode function has a number of bugs, which will allow invalid JSON to be parsed in odd ways. isJson('0123') should return false because 0123 is not JSON, however isJson('123') should return true because 123 is JSO...
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PHP's array_map including keys

... Here's my very simple, PHP 5.5-compatible solution: function array_map_assoc(callable $f, array $a) { return array_column(array_map($f, array_keys($a), $a), 1, 0); } The callable you supply should itself return an array with two values, i.e. r...
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How do I deep copy a DateTime object?

... I haven't tested it actually, but it is mentioned at php.net that this is only aviable for PHP 5.3 and greater. – hugo der hungrige Feb 1 '13 at 1:02 ...
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Checking to see if one array's elements are in another array in PHP

I have two arrays in PHP as follows: 7 Answers 7 ...
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Best XML Parser for PHP [duplicate]

... C, and is very fast. But second, the parsed document takes the form of a PHP object. So you can "query" like $root->myElement. share | improve this answer | follow ...
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Get fragment (value after hash '#') from a URL in php [closed]

How can i select the fragment after the '#' symbol in my URL using PHP? The result that i want is "photo45". 10 Answers ...
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upstream sent too big header while reading response header from upstream

...ove the message, is it streaming with logged lines preceding the message? PHP message: PHP Notice: Undefined index: Example snippet from a loop my log file: 2015/11/23 10:30:02 [error] 32451#0: *580927 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined index: Firstname in /srv/www/class...
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How does RewriteBase work in .htaccess

...hs in the rule's target. So say you have this rule: RewriteRule ^foo$ bar.php [L] The bar.php is a relative path, as opposed to: RewriteRule ^foo$ /bar.php [L] where the /bar.php is an absolute path. The absolute path will always be the "root" (in the directory structure above). That means tha...
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AJAX Mailchimp signup form integration

...mp account. The following is an updated version of this answer which uses PHP: The PHP files are "secured" on the server where the user never sees them yet the jQuery can still access & use. 1) Download the PHP 5 jQuery example here... http://apidocs.mailchimp.com/downloads/mcapi-simple-sub...
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Creating anonymous objects in php

... some years, but I think I need to keep the information up to date! Since PHP 7 it has been possible to create anonymous classes, so you're able to do things like this: <?php class Foo {} $child = new class extends Foo {}; var_dump($child instanceof Foo); // true ?> You can ...