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2. PHP Interview Questions
3. PHP Output Questions

PHP Output Questions

1. Find Error/Output in follwing code:

                            
<?php

class A {

   function __construct() {

       echo "In Class A";

   }

}



class B extends A {

   function __construct() {

       echo "In Class B";

   }

}



class C extends B {

}



$obj = new C();

?>

                            

1. In Class A
2. In Class B
3. No Output
4. Fatal Error

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2. Find Error/Output in follwing code:

                            
<?php

class MyClass

{

    const CONST_VAR = 'Right';

    function showConstant() {

        echo  $this->CONST_VAR;

    }

}

$class = new MyClass();

$class->showConstant();

?>

                            

1. Right
2. No output
3. Undefined property
4. None of the above

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3. Find Error/Output in follwing code:

                            
<?php

$email  = 'sumit@gmail.com';

$user = strstr($email, '@', true);

echo $user;

?>

                            

1. sumit
2. @gmail.com
3. gmail.com
4. sumit@

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4. Find Error/Output in follwing code:

                            
<?php

$val1 = 42;

if(is_numeric($val1)) {

  echo "Integer";

} else {

  echo "Not Integer";

}



$val2 = '42';

if(is_numeric($val2)) {

  echo "Integer";

} else {

  echo "Not Integer";

}

?>

                            

1. Integer Integer
2. Integer Not Integer
3. Not Integer Integer
4. Not Integer Not Integer

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5. Find Error/Output in follwing code:

                            
<?php

$val1 = 42;

if(ctype_digit($val1)) {

  echo "Integer";

} else {

  echo "Not Integer";

}



$val2 = '42';

if(ctype_digit($val2)) {

  echo "Integer";

} else {

  echo "Not Integer";

}

?>

                            

1. Not Integer Integer
2. Integer Not Integer
3. Integer Integer
4. Not Integer Not Integer

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6. Find Error/Output in follwing code:

                            
<?php

$strings = 'test test';

if (ctype_alpha($strings)) {

  echo "The string consists of all letters.";

} else {

  echo "The string does not consist of all letters.";

}

?>

                            

1. The string does not consist of all letters.
2. The string consists of all letters.
3. Fatal Error
4. Syntax Error

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