<?php. This opening tag indicates the beginning of PHP code.
Which of the following PHP tags is used to start and end a block of PHP code?
A). <?php ?>
B). <? ?>
C). <script>
D). <php >
What is the correct way to define a constant in PHP?
A). define('MY_CONST', 'value');
B). $MY_CONST = 'value';
C). const MY_CONST = 'value';
D). MY_CONST = 'value';
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 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 symbols is used to concatenate strings in PHP?
A). +
B). <>
C). .
D). -
Which of the following is true about PHP variables?
A). Variables must be declared before use
B). Variable names are case-insensitive
C). Variables cannot be reassigned
D). Variables can only store integers
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 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
Which of the following is NOT a valid PHP comparison operator?
A). <=
B). ==
C). <>
D). !