How to save base64 encoding to local file in php?
Use C to base64 encode an image locally and submit it to the web server through post. After base64_decode decoding by PHP, the image is not correct after saving. Use a hexadecimal editor to view and compare the source file (local source file image), and find that the
0d--carriage return character is missing after saving.
The problem experienced during the process is that the data taken out after post transmission_POST['data'] is compared with the previous base64-encoded data number and becomes a space. Use PHP's
str_replace(...)to replace it back to the original one. It can Make sure there is no problem with this.
After is decoded by
$img = base64_decode(...), the length of the returnedstrlen($img)is the same as the length of the source file. Whether usingfor(...) fwrite(...);orfile_put_contents(...), the byte 0d is lost
To be resolved: see title
Solved: There was a problem when opening the file stream, the process was correct
Reply content:
Use C to base64 encode an image locally and submit it to the web server through post. After base64_decode decoding by PHP, the image is not correct after saving. Use a hexadecimal editor to view and compare the source file (local source file image), and find that the
0d--carriage return character is missing after saving.The problem experienced during the process is that the data taken out after post transmission_POST['data'] is compared with the previous base64-encoded data number and becomes a space. Use PHP's
str_replace(...)to replace it back to the original one. It can Make sure there is no problem with this.
After is decoded by
$img = base64_decode(...), the length of the returnedstrlen($img)is the same as the length of the source file. Whether usingfor(...) fwrite(...);orfile_put_contents(...), the byte 0d is lost
To be resolved: see title
Solved: There was a problem when opening the file stream, the process was correct
You can directly output this image on the web to see if it can be displayed normally, similar to 
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