Web Programming

What is the result of this PHP code: echo strtr("abc", "abc", "123");

• abc

• 123

• 132

• a1b2c3

Function to split string using regex?

• preg_split()

• preg_regex()

• preg()

• split()

What will str_repeat("PHP", 3); return?

• PHP

• PHP PHP PHP

• PHP3

• PHPPHPPHP

Which function finds the last occurrence of a substring in a string?

• substr()

• strpos()

• strrpos()

• strlastpos()

What is the output of:

$str = "hello world"; echo substr($str, -5, 3);

• wor

• rld

• llo

• orl

What is the use of heredoc syntax in PHP?

• Error handling

• Embedding variables in strings easily

• Faster looping

• Importing files

Which loop is guaranteed to run at least once?

• For

• Foreach

• While

• do...While

What is the purpose of the continue statement?

• Stop loop execution

• Exit the loop

• Skip to next iteration

• Repeat current iteration

How many levels does break 2; exit?

• 1

• 2

• 3

• All

Which function compares two strings ignoring case?

• strcmp()
  

• strncasecmp()
  

• strcasecmp()
  

• strncmp()