串接 instagram api，給 user_name 後 download 所有該 user 的 public images

instagram_download.php

<?php
function get_instagram_uid($user_name,$access_token){
	$q_array = array(
		'q' => strtolower($user_name),
		'access_token' => $access_token,
	);
	$url = 'https://api.instagram.com/v1/users/search?' . http_build_query($q_array);

	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_POST, false);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_SSLVERSION, 3);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	$json = curl_exec($ch);
	curl_close($ch);

	$json = json_decode($json);
	foreach( $json->data as $k => $row){
		if( $row->username == $user_name){
			return $row->id;
		}
	}

	return false; 
}

function download_user_media($user_id,$access_token,$save_dir){
	$d_array = array(
		'count' => '-1',
		'access_token' => $access_token,
	);
	$url = 'https://api.instagram.com/v1/users/' . $user_id . '/media/recent/?' . http_build_query($d_array);

	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_POST, false);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_SSLVERSION, 3);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	$output = curl_exec($ch);
	curl_close($ch);

	$output = json_decode($output);
	foreach( $output->data as $k => $row){
		$image_url = $row->images->standard_resolution->url;
		$url_array = pathinfo($image_url);
		$new_file = $save_dir . '/' . $url_array['basename'];
		if( !file_exists($new_file) ){
			$s = file_put_contents($new_file,file_get_contents($image_url));
			if(!$s){
				die('copy image error.');
			}
		}
	}
}

ini_set('max_execution_time', 0);
$access_token = '510573486.ab7d4b6.d8b155be5d1a47c78f72616b4d942e8d';
$username_array = array(
	'smooshblog',
);

$start = microtime(true);

if (!file_exists('./instagram_download') and !is_dir('./instagram_download')) {
	mkdir('./instagram_download');
}
foreach( $username_array as $user_name ){
	$user_id = get_instagram_uid($user_name,$access_token);
	$save_dir = './instagram_download/' . $user_name;
	if (!file_exists($save_dir) and !is_dir($save_dir)) {
		mkdir($save_dir);         
	}

	download_user_media($user_id,$access_token,$save_dir);
	echo $user_name . ' download had success.<br />';
}

$end = microtime(true);
$time = number_format(($end - $start), 2);
echo 'Download spent ', $time, ' seconds';