Answer & Solution
Answer: Option A
Solution:
The
<?php ?> tags are used to start and end a block of PHP code.
Q
Which of the following PHP tags is used to start and end a block of PHP code?
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Which of the following is NOT a valid PHP variable name?
A). $my_var
B). $MyVar
C). $my-var
D). $myVar123
What does the PHP statement echo 'Hello, World!'; do?
A). Prints 'Hello, World!' to the browser
B). Declares a variable named 'Hello, World!'
C). Performs a calculation
D). Defines a function named 'Hello, World!'
Which of the following statements 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 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 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 is the purpose of the PHP unset() function?
A). To destroy a specified variable
B). To create an array in PHP
C). To execute SQL queries
D). To define a function in PHP
What is the purpose of the PHP exit() function?
A). To terminate the script execution
B). To print output to the browser
C). To create a loop in PHP
D). To define a function in PHP
What does the strlen() function do in PHP?
A). Returns the length of a string
B). Converts a string to lowercase
C). Checks if a string contains a substring
D). Returns the first occurrence of a substring in a string
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
What is the purpose of the PHP die() function?
A). To terminate the script execution and display a message
B). To print output to the browser
C). To create a loop in PHP
D). To define a function in PHP