CODEWITHSUNDEEP
php
John
John

Reputation: 3

Check if picture is the same

Is it possible to check if two picture are identical with php?

(I want to check if a picture of an event from facebook is the dafault, or not)

Thanks, John

Upvotes: 0

Views: 3103

Answers (2)

Jon Gjengset
Jon Gjengset

Reputation: 4236

I'd use a hashing algorithm and compare the two hashes:

if ( sha1_file ( $file1 ) === sha1_file ( $file2 ) ) {
  // They're identical
} else {
  // They're not
}

This uses sha1_file, but you could use any hashing algorithm.. MD5 for instance

Upvotes: 6

Brad
Brad

Reputation: 163234

Identical, as in bit for bit? You may be able to simply hash the files, for a (fairly) quick comparison.

If you want to compare visually, that is a completely different matter.

Upvotes: 1

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