PHP | exif_read_data() Function

The exif_read_data() function is an inbuilt function in PHP which is used to read the EXIF headers from an image file.

Syntax:

array exif_read_data( mixed $stream, string $sections,
                          bool $arrays, bool $thumbnail )

Parameters: This function accepts four parameters as mentioned above and described below:

• $stream: It specifies the image file.
• $sections (Optional): It specifies the comma separated list of sections.
• $arrays (Optional): It specifies whether not to present each section as array.
• $thumbnail (Optional): It specifies whether to read thumbnail or not.

Return Value: This function returns an associative array on success or FALSE on failure.

Below examples illustrate the exif_read_data() function in PHP:

Example 1:

<?php

// Open a the file from local folder
$fp = fopen('./geeksforgeeks.jpg', 'rb');

// Read the exif headers
$headers = exif_read_data($fp);

// Print the headers
echo 'EXIF Headers:' . '<br>';

print("<pre>".print_r($headers, true)."</pre>");
?>

Output:

EXIF Headers:
Array
(
    [FileName] => geeksforgeeks.jpg
    [FileDateTime] => 1580889002
    [FileSize] => 17763
    [FileType] => 2
    [MimeType] => image/jpeg
    [SectionsFound] => 
    [COMPUTED] => Array
        (
             => width="667" height="184"
            [Height] => 184
            [Width] => 667
            [IsColor] => 1
        )

)

Example 2:

<?php

// Create an Imagick Object
$image = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/20200123100652/geeksforgeeks12.jpg');

// Add comment to the image
$image->commentImage("GeeksforGeeks");

// Save the file to local image
$image->writeImage('geeksforgeeks.jpg');

// Open a the same file
$fp = fopen('./geeksforgeeks.jpg', 'rb');

// Read the exif headers
$headers = exif_read_data($fp, 'COMMENT', true, true);

// Print the headers
echo 'EXIF Headers:' . '<br>';

print("<pre>".print_r($headers['COMMENT'], true)."</pre>");
?>

Output:

EXIF Headers:
Array
(
    [0] => GeeksforGeeks
)

Reference: https://www.php.net/manual/en/function.exif-read-data.php