How-to articles, tricks, and solutions about PHP
?: operator (the 'Elvis operator') in PHP
The Elvis operator, represented by a question mark followed by a colon (?:), is a ternary operator in PHP that is used to simplify expressions that return a value based on a condition.
.rar, .zip files MIME Type
In PHP, you can use the finfo_file function to determine the MIME type of a file.
'AND' vs '&&' as operator
In PHP, both 'AND' and '&&' are logical operators that are used to test if two statements are true.
"call to undefined function imagecreatetruecolor" error in PHP & pChart
The "call to undefined function imagecreatetruecolor" error in PHP typically occurs when the GD library, which is required to create image resources, is not installed or enabled on the server.
"Database query failed: Data truncated for column 'column_name' at row 1
This error message is indicating that a database query has failed due to data being too large to fit into a specific column in the database table.
"Typed property must not be accessed before initialization" error when introducing properties type hints?
In PHP, the "Typed property must not be accessed before initialization" error is encountered when a property is defined with a type hint, but it is accessed before it has been explicitly assigned a value.
The $_SERVER['HTTP_REFERER'] variable is a server-side variable that contains the URL of the page that linked to the current page.
413 Request Entity Too Large - File Upload Issue
The HTTP error 413 Request Entity Too Large indicates that the server is unable to process the request because the request payload (the body of the request) is larger than the server is able to handle.
Access a global variable in a PHP function
In PHP, you can access a global variable within a function by using the global keyword.