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PHP Class and Pattern Matching

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Questions and Answers

What operator is used for catenation in string operations?

period

What is the result of implicit conversion of a string containing a period to a numeric value?

double

What is the result of implicit conversion of a string not containing a period to a numeric value?

integer

What happens if the string does not begin with a sign or a digit during implicit conversion?

result is zero Signup and view all the answers

What is the purpose of the trim function in PHP?

remove whitespace from both ends Signup and view all the answers

What is the difference between ltrim and rtrim?

ltrim removes whitespace from the left, rtrim removes from the right Signup and view all the answers

What is the purpose of the strlen function in PHP?

get the length of a string Signup and view all the answers

How do you explicitly convert a variable to an integer in PHP?

using (int)$total or intval($total) Signup and view all the answers

What is the result of the expression '12a' + 15?

15 or zero Signup and view all the answers

What is the purpose of the floor function in PHP?

get the floor value of a number Signup and view all the answers