In order to find if a variable holds an actual number or a string containing characters that can be translated into a number you can use:
A. is_num()
B. is_number()
C. if_numeric
D. is_numeric()
Answer: Option D
Related Questions on Operators and Expressions in php
What will be the output of the following PHP code ?
<?php
"Hello World"
?>
A. Error
B. Hello World
C. Nothing
D. Missing semicolon error
What will be the output of the following PHP code ?
<?php
print_r "Hello world"
?>
A. Error
B. Hello World
C. Nothing
D. Missing semicolon error
A. redredred
B. redred
C. red
D. Error
A. # Hello world
B. Hello world# Hello world
C. Hello world
D. Error
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