PHP syntax and code structure Mocktest

The require statement in PHP is similar to include, but it generates a fatal error if the file cannot be included, instead of a warning. It is commonly used for essential files that must be present for the script to function properly.

In PHP, constants are typically defined using uppercase letters and underscores, so MY_CONST is a valid constant name.

The exit() function in PHP is used to terminate the script execution immediately.

PHP supports dynamic typing, meaning that variables do not need to be explicitly declared with data types.

The print_r() function in PHP is used to print human-readable information about a variable, including its type and structure.

In PHP, the not equal to operator is represented by !=, not <>.

The strlen() function in PHP returns the length of a string.

The unset() function in PHP is used to destroy a specified variable, freeing up the memory associated with it.

PHP arrays can hold values of different data types, including strings, integers, floats, and even other arrays.

The die() function in PHP is used to terminate the script execution and display a message. It is similar to exit(), but allows you to specify a message to be displayed before terminating the script.