Upload base64 images to wordpress upload directory

upload-base64-image-to-wp.php

<?php
function tidaweb_upload_base64_image( $base64_image_data, $base64_file_name )
{
	// check and get path of upload directory
	$upload_dir = wp_upload_dir();
	$upload_path = str_replace( '/', DIRECTORY_SEPARATOR, $upload_dir['path'] ) . DIRECTORY_SEPARATOR;

	$img = $base64_image_data;
	if(strpos($img, 'image/jpg') !== false)
	{
		$file_extension = "jpg";
		$file_type = "image/jpg";	
		$img = str_replace('data:image/jpg;base64,', '', $img);
	}
	elseif(strpos($img, 'image/jpeg') !== false)
	{
		$file_extension = "jpg";
		$file_type = "image/jpg";
		$img = str_replace('data:image/jpeg;base64,', '', $img);
	}
	else
	{
		$file_extension = "png";
		$file_type = "image/png";	
		$img = str_replace('data:image/png;base64,', '', $img);
	}
	$img = str_replace(' ', '+', $img);
	
	$decoded = base64_decode($img) ;

	$file_name = sanitize_file_name( $base64_file_name ). '.' . $file_extension;
	$hashed_filename  = md5( $file_name . microtime() ) . '-' . $file_name;

	// create file on upload directory
	$image_upload = file_put_contents( $upload_path . $hashed_filename, $decoded );

	//HANDLE UPLOADED FILE
	if( !function_exists( 'wp_handle_sideload' ) ) {
		require_once( ABSPATH . 'wp-admin/includes/file.php' );
	}

	// @new file
	$file             = array();
	$file['error']    = '';
	$file['tmp_name'] = $upload_path . $hashed_filename;
	$file['name']     = $hashed_filename;
	$file['type']     = $file_type;
	$file['size']     = filesize( $upload_path . $hashed_filename );
	
	// upload file to server
	// @new use $file instead of $image_upload
	$uploaded_file = wp_handle_sideload( $file, array( 'test_form' => false ) );
	
	if(empty($uploaded_file['error']))
	{
		$filename = $uploaded_file['file'];
		$attachment = array(
			'post_mime_type' => $uploaded_file['type'],
			'post_title' => preg_replace('/\.[^.]+$/', '', sanitize_file_name( $base64_file_name )),
			'post_content' => '',
			'post_status' => 'inherit',
			'guid' => $upload_dir['url'] . '/' . sanitize_file_name( $base64_file_name )
			);
		$attach_id = wp_insert_attachment( $attachment, $filename );
		if(!is_wp_error($attach_id))
		{
			require_once(ABSPATH . 'wp-admin/includes/image.php');
			$attach_data = wp_generate_attachment_metadata( $attach_id, $filename );
			wp_update_attachment_metadata( $attach_id, $attach_data );

			return [
				'attach_id' => $attach_id,
				'attach_url' => wp_get_attachment_image_src( $attach_id, 'full' )[0]
			];
		}
		else
		{
			return [
				'error' => __('Error when uploading image.')
			];
		}
	}
	else
	{
		return [
			'error' => $uploaded_file['error']	
		];
	}
}