The double question mark syntax in PHP will return null if $bar is undefined. This syntax is extremely useful to simplify code and avoid massive if statements. Now I have the following situation It seems so likely that there exists a one-line simplification for the statement but I just couldn’t come up …
Tag: syntax
PHP 8 Attributes: Is it possible to validate metadata passed to attributes or force attribute instantiation?
Playing a little bit with the new PHP 8 attributes (annotations) (https://stitcher.io/blog/attributes-in-php-8) I started to create my own ones. Simple example: Hoping that the following code would throw an BadAttributeMetadataException unfortunately it finishes successfully: Is there away to validate the met…
PHP weird curly brace syntax?
Does anyone know if PHP has an alternate curly brace syntax? I’ve come across a PHP file with a weird syntax I’ve never seen before. It’s being used in a WordPress theme. Here’s an example of the …
expecting statement -php syntax | if-else
I get critical error.phpstorms says that expecting statements.I couldnt find a solution Answer You cannot “interrupt” the PHP code after the closing { of the if and before the else keyword. Cleaned up version: To avoid such errors, try learning and following a coding standard, e.g. PSR-12. Since y…
Print a key in a PHP multidimensional array
I have a multidimensional array and I want to print the contents as follows: My problem is that I don’t know how to refer to the key of the first sub-array (the names). key($index) just replaces all of the names in the output with “class1”. Here’s my code so far: I’m pretty new t…
Variable variables in PHP – What is their purpose?
In PHP there’s a functionality officially called “Variable Variables” where one can assign variable variables. A variable variable takes the value of one variable as the name for a new variable! For …
PHP Difference between array() and []
I’m writing a PHP app and I want to make sure it will work with no errors. The original code: Would the following work with no errors or is not recommended for some reason? Are there any difference? I’ve looked again the data about array() and the short array method with square brackets [] in PHP.…
Validate PHP syntax in VIM
I would like to know how if it’s possible to validate if a PHP file is valid in VIM without closing VIM every time? Thank you Answer You can execute shell commands in vim. This is the same as calling php -l filename.php from the shell: I have this mapped into my ~/.vim/after/ftplugin/php.vim file so tha…