PHP File Handling: Exercises, Practice, Solutions

PHP File Handling: Exercises Practice Solution [ 18 exercises with solution ]

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The following exercises cover various aspects of PHP File Handling. They will practice working with files, directories, file permissions, and file formats like text, CSV, JSON, XML, and binary.

1. Write a PHP program to read and display the contents of a text file.
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2. Write a PHP function that takes a file path as input and checks if the file exists.
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3. Write a PHP script to count the number of lines in a text file.
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4. Write a PHP function to write a string to a file.
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5. Write a PHP program that reads a CSV file and displays the data in a tabular format.
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6. Write a PHP script to rename a file.
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7. Write a PHP function that copies a file from one location to another.
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8. Write a PHP program that deletes a specific file from the server.
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9. Write a PHP function that checks the file size and displays it in human-readable format (KB, MB, GB).
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10. Write a PHP program that checks if a file is writable and displays appropriate messages.
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11. Write a PHP program that appends a string to an existing file.
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12. Write a PHP script to check the file extension and display appropriate messages for different file types.
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13. Write a PHP function to check if a directory exists and create it if it doesn't.
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14. Write a PHP program that searches for a specific word in a text file and displays the line number(s) where it occurs.
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15. Write a PHP program that reads and displays the contents of a binary file.
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16. Write a PHP program that reads an XML file and extracts specific data from it.
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17. Write a PHP function that reads a JSON file and returns the decoded data as an associative array.
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18. Write a PHP function to calculate the MD5 checksum of a file.
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