SV Infotech Interview Questions and Answers

Print and echo are both used to output data in PHP, but echo is slightly faster and can output multiple values at once.

• Print is a language construct while echo is a language construct and a function.

• Echo can output multiple values at once while print can only output one value at a time.

• Echo is slightly faster than print because it does not return a value.

Different loops in PHP include for, while, do-while, and foreach loops.

• For loop: Used for iterating a specific number of times.

• While loop: Continues to execute as long as a specified condition is true.

• Do-while loop: Similar to while loop, but the condition is checked after the loop body is executed at least once.

• Foreach loop: Used for iterating over arrays or objects.

Different types of joins in SQL help combine data from multiple tables based on a related column between them.

• INNER JOIN: Returns rows when there is at least one match in both tables.

• LEFT JOIN: Returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN: Returns all rows from the right table and the matched rows from the left table.

• FULL JOIN: Returns rows when there is a match in one of th...read more

Position Absolute is positioned relative to its closest positioned ancestor, while Position Relative is positioned relative to its normal position.

• Position Absolute removes the element from the normal flow of the document, while Position Relative does not.

• Position Absolute is often used for overlaying elements on top of each other, while Position Relative is used for minor positioning adjustments.

• Position Absolute coor...read more

To export a database, you can use tools like phpMyAdmin or command line.

• Use phpMyAdmin to export database by selecting the database, clicking on 'Export', and choosing the desired format.

• Use command line to export database using commands like mysqldump.

• You can also use Drupal modules like Backup and Migrate to export database.

• Make sure to choose the correct format and settings for the export.