Which php functions are essential for adding content into file or uploading file?


please without which php functions would be impossible to add content into file or upload an file from (computer or url) within an php script?

i wish to find which functions are essential for doing that task:

  • adding new content to a file on apache, php webhosting
  • uploading new file (from computer or url or from whatever)
  • creating a file with content from within php script

thank You

Looking for these?

Filesystem Functions
Directory Functions

Also this.


And this is good info about file uploading: http://php.net/manual/en/features.file-upload.php


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