COMPUTER LANGUAGES | PHP | PHP INTERVIEW QUESTION AND ANSWERS - 05

PHP Interview Question and Answers

16.     What are the Formatting and Printing Strings available in PHP?
     
Function    Description
printf()     Displays a formatted string
sprintf()     Saves a formatted string in a variable
fprintf()     Prints a formatted string to a file
number_format()     Formats numbers as strings

17.     How to find a length of a string?
      strlen()

18.     How can we get second of the current time using date function?
      <?php
$second = date(“s”);
?>

19.     What are the different types of errors in php?     
    Notices: These are trivial, non-critical errors that PHP encounters while executing a script - for example, accessing a variable that has not yet been defined. By default, such errors are not displayed to the user at all - although, as you will see, you can change this default behaviour.
    Warnings: These are more serious errors - for example, attempting to include() a file which does not exist. By default, these errors are displayed to the user, but they do not result in script termination.
    Fatal errors: These are critical errors - for example, instantiating an object of a non-existent class, or calling a non-existent function. These errors cause the immediate termination of the script, and PHP’s default behaviour is to display them to the user when they take place.

If we just pass a simple var instead of a an array it will return 1.

20.     What is the functionality of the function strstr and stristr?
      strstr() returns part of a given string from the first occurrence of a given substring to the end of the string.
For example:
strstr("user@example.com","@") will return "@example.com".

stristr() is idential to strstr() except that it is case insensitive.