In PHP the _______    function returns the total number of characters in a string.

• len()

• str_length()

• length()

• strlen()

In PHP the __________ function is used to find out whether some text occurs within a string.

• strstr()  

• find()

• count()

• str_find()

 In PHP the __________ function finds the last match in the string, rather than the first

• strpos()

• str_last()

•  strrpos()

• strpos_last()

Which of the following is not a Built-in String functions in php?

• strlen()

• str_replace()

• strpos()

• strreverse()

Which of the following is the output of the below code?

<?php echo strpos("Hello letsfindcourse!", "lets"), " \n"; ?>

• 4

• 5

• 6

• 7

Predict the output of the following code snippet :

<?php $str="chess was played"; echo strlen(substr($str,3,2))." " ?>

• 1

• 2

• null

• 3

Arrays with named keys in PHP are called ________

• Associative arrays 

• Indexed arrays 

• Multidimensional arrays 

• named arrays

 The _____ function is used to sort associative arrays in descending order, according to the key in PHP.

• arsort()

• krsort() 

• ksort()

• sort()

 The _____ function removes the first element from the start of an array in PHP.

• array_shift() 

• array_pop() 

• array_push()

• array_unshift() 

 In PHP the _____ function adds one or more new elements to the end of an array.

• array_unshift() 

• array_push()

• array_shift() 

• array_pop()