In website development, we can see that some websites convert images into base64 data streams. This has two advantages. One is to reduce server http requests, and the other is to store images as strings in the database. , that is, the picture can be read directly from the database, so how does PHP convert the picture into a data/base64 string? , Friends in need can refer to
php source code to convert images into data/base64 data stream
Here we share a method to convert images into base64 encoding format :
<?php $img = 'test.jpg'; $base64_img = base64EncodeImage($img); echo '<img src="' . $base64_img . '" />'; /* 作者:http://www.manongjc.com */ function base64EncodeImage ($image_file) { $base64_image = ''; $image_info = getimagesize($image_file); $image_data = fread(fopen($image_file, 'r'), filesize($image_file)); $base64_image = 'data:' . $image_info['mime'] . ';base64,' . chunk_split(base64_encode($image_data)); return $base64_image; } ?>
The base64 encoded string converted by the above method can be stored in the database and can be read directly from the database when needed, reducing The number of requests when accessing the image.
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