Advance web programming multiple choice questions mcqs

51. What happens if you add a string to an integer using the + operator?.

A. The interpreter outputs a type mismatch error 
B. The string is converted to a number and added to the integer 
C. The string is discarded and the integer is preserved 
D. The integer and string are concatenated together in a new string 

52. The ___________ function can be used to compare two strings using a case-insensitive binary algorithm.

A. stristr() 
B. strcmp() 
C. stricmp() 
D. strcasecmp() 

53. Which of the following functions can be used to convert the binary data stored in a string into its hexadecimal representation?.

A. encode_hex() 
B. pack() 
C. hex2bin() 
D. printf() 

54. Array values are keyed by ______ values (called indexed arrays) or using ______ values (called associative arrays). Of course, these key methods can be combined as well.

A. Integer, string 
B. Float, string 
C. String, Boolean 
D. Positive number, negative number 

55. Which of the following functions do not return a timestamp?.

A. time() 
B. date() 
C. strtotime() 
D. localtime() 

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