PHP Interview Question and Answers
| 16. |
What are the different types of errors in php? |
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- 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.
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| 17. |
What are the Formatting and Printing Strings available in PHP? |
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| 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 |
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| 18. |
How to find a length of a string? |
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strlen() |
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| 19. |
What is the functionality of the function strstr and stristr? |
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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. |
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| 20. |
How can we get second of the current time using date function? |
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<?php
$second = date(“s”);
?>
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Gk Questions with Answers