我正在尝试(像地狱......)删除','来自foreach循环中的最后一个元素。 尝试了几种计数器方法,但并没有真正成功。
[<?php
function fetchData($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 20);
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
$result = fetchData("https://api.instagram.com/v1/users/XXXXXXX/media/recent/?access_token=XXXXXXX&count=10");
$result = json_decode($result);
foreach ($result->data as $post) {
echo '{"name":"Hello","imgpath":" ';echo $post->images->low_resolution->url;echo '"},';
}
?>]
答案 0 :(得分:4)
<?php
...
$json = array();
foreach ($result->data as $post){
$json[]=array(
'name'=>'Hello',
'imgpath'=>$post->images->low_resolution->url,
);
}
header('Content-Type: application/json');
exit(json_encode($json));
?>
答案 1 :(得分:1)
将整个事物存储在字符串中而不是回显它,然后您可以使用$string=substr($string,0,-1);
[<?php
function fetchData($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 20);
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
$result = fetchData("https://api.instagram.com/v1/users/XXXXXXX/media/recent/?access_token=XXXXXXX&count=10");
$string="";
$result = json_decode($result);
foreach ($result->data as $post) {
$string.='{"name":"Hello","imgpath":"' . $post->images->low_resolution->url . '"},';
}
echo substr($string,0,-1);
?>]
答案 2 :(得分:0)
可能是这样的:
// quick and dirty solution
foreach ($result->data as $index => $post) {
$comma = ',';
if ((int) $index === count($result->data) -1) {
$comma = '';
}
$string.='{"name":"Hello","imgpath":" ';echo $post->images->low_resolution->url;echo '"}'.$comma;
}
答案 3 :(得分:-1)
我会使用implode,相当清洁:
$result = json_decode($result);
$string = '{"name":"Hello","imgpath":"';
$string .= implode( '}, {"name":"Hello","imgpath":"', $result->data );
$string .= '}';
echo $string;