🐘 PHP File I/O (Read & Write Files)

PHP lets you read from and write to files on your server — super useful for saving data, logs, or config info.

📝 Example: Write & Read a File

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file_put_contents() — Write a string to a file (creates or overwrites).
file_get_contents() — Read the entire contents of a file into a string.
fopen(), fwrite(), fread(), and fclose() — More granular control for reading/writing files.
Always handle file permissions and errors in real projects.

💡 Tip: File paths are relative to your script location or can be absolute paths on your server.