Which of the following is true about PHP variables?

Which of the following symbols is used to concatenate strings in PHP?

A). +

B). <>

C). .

D). -

Which of the following is true about PHP data types?

A). PHP is a strongly typed language

B). Variables must be explicitly declared with data types

C). PHP supports dynamic typing

D). PHP only supports numeric data types

What is the purpose of the PHP include statement?

A). To include and evaluate an external PHP file

B). To create a loop in PHP

C). To define a function in PHP

D). To execute a SQL query

Which of the following is true about PHP comments?

A). Comments are ignored by the PHP interpreter

B). Comments can only be single-line

C). Comments must start with /* and end with */

D). Comments are displayed on the webpage

What is the purpose of the PHP print_r() function?

A). To print human-readable information about a variable

B). To redirect output to a file

C). To execute SQL queries

D). To define a function in PHP

Which of the following is a valid PHP constant?

A). MY_CONST

B). $myConst

C). MY_CONST

D). myConst

Which of the following statements is true about PHP arrays?

A). PHP arrays can hold values of different data types

B). PHP arrays must have continuous index values

C). PHP arrays are immutable

D). PHP arrays can only store integers

What does the phpinfo() function do in PHP?

A). Displays information about the PHP environment

B). Executes SQL queries

C). Validates user input

D). Encrypts data transmission

Which of the following is NOT a valid PHP variable name?

A). $my_var

B). $MyVar

C). $my-var

D). $myVar123

What is the purpose of the PHP require statement?

A). To include and evaluate an external PHP file

B). To define a function in PHP

C). To create a loop in PHP

D). To execute a SQL query