10 Questions
The strpos() function finds the numerical position of a particular ______ in a string.
character
The substr() function takes a string, an integer (the position at which the desired substring starts), and an optional third integer argument that is the length of the desired ______.
substring
If no third argument is given in the substr() function, the substring is assumed to continue until the ______.
end
The numbering in PHP arguments that deal with numerical string positions starts with ______ rather than 1.
0
The statement: $my_string_var.= $new_addition; is exactly equivalent to: $my_string_var = $my_string_var.$new_addition; This demonstrates ______ in PHP.
concatenation
The function used to find the location of a particular character in a string is ______.
strpos()
The function used to select a portion of a string is ______.
substr()
The statement: echo(substr("Take what you need, and leave the rest behind",23)); prints the string ______.
leave the rest behind
The statement: echo(substr("Take what you need, and leave the rest behind",5, 13)); prints ______.
what you need—a 13-character string starting at (0-based) position 5
The strpos() function helps in finding the numerical position of a specific ______ in a string.
character
Test your knowledge on the basic structure of HTML documents including the essential elements and tags required. Learn about the main components like head, title, and body.
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