function count($data) {
$json = file_get_contents( 'http://api.facebook.com/restserver.php?method=links.getStats&format=json&urls=' . $data . '&pretty=1' );
$json_data = json_decode($json, true);
$count = $json_data[0]['total_count'];
if(empty ($count) ) {
return 'n/a';
} else {
if( $count < 1000 ) return $count;
$x = round($count);
$x_number_format = number_format($x);
$x_array = explode(',', $x_number_format);
$x_parts = array('k', 'm', 'b', 't');
$x_count_parts = count($x_array) - 1;
$x_display = $x;
$x_display = $x_array[0] . ((int) $x_array[1][0] !== 0 ? '.' . $x_array[1][0] : '');
$x_display .= $x_parts[$x_count_parts - 1];
return $x_display;
}
}
如何在上述函数之外仅获取$count
的值?调用上面的函数肯定会返回$x_display
,我想在代码中的其他地方回显简单计数$count
。
答案 0 :(得分:3)
使用$x_display
返回。通常,这是以数组形式完成的,您可以使用list()
来获取每个部分:
function count($data) {
$json = file_get_contents( 'http://api.facebook.com/restserver.php?method=links.getStats&format=json&urls=' . $data . '&pretty=1' );
$json_data = json_decode($json, true);
$count = $json_data[0]['total_count'];
if(empty ($count) ) {
return 'n/a';
} else {
if( $count < 1000 ) return $count;
$x = round($count);
$x_number_format = number_format($x);
$x_array = explode(',', $x_number_format);
$x_parts = array('k', 'm', 'b', 't');
$x_count_parts = count($x_array) - 1;
$x_display = $x;
$x_display = $x_array[0] . ((int) $x_array[1][0] !== 0 ? '.' . $x_array[1][0] : '');
$x_display .= $x_parts[$x_count_parts - 1];
return array($x_display, $count);
}
}
list($x_display, $count) = count($data);
虽然返回两个值通常不是一个好习惯。把它分解成两个函数我可能是更好的方法:
function count($data) {
$json = file_get_contents( 'http://api.facebook.com/restserver.php?method=links.getStats&format=json&urls=' . $data . '&pretty=1' );
$json_data = json_decode($json, true);
return $json_data[0]['total_count'];
}
function getDisplay($count) {
if(empty ($count) ) {
return 'n/a';
} else {
if( $count < 1000 ) return $count;
$x = round($count);
$x_number_format = number_format($x);
$x_array = explode(',', $x_number_format);
$x_parts = array('k', 'm', 'b', 't');
$x_count_parts = count($x_array) - 1;
$x_display = $x;
$x_display = $x_array[0] . ((int) $x_array[1][0] !== 0 ? '.' . $x_array[1][0] : '');
$x_display .= $x_parts[$x_count_parts - 1];
return $x_display;
}
}
$count = count($data);
$x_display = getDisplay($count);
不使用某人不可避免地建议的global
关键字。这是一种糟糕的编程实践,可能导致难以发现错误。
答案 1 :(得分:1)
在我看来,这是一个完美的课程用途。
class Classname {
protected $count;
function getXDisplay() {
$json = file_get_contents( 'http://api.facebook.com/restserver.php?method=links.getStats&format=json&urls=' . $data . '&pretty=1' );
$json_data = json_decode($json, true);
$this->count = $count = $json_data[0]['total_count'];
if(empty ($count) ) {
return 'n/a'; // should be null ?
} else {
if( $count < 1000 ) return $count;
$x = round($count);
$x_number_format = number_format($x);
$x_array = explode(',', $x_number_format);
$x_parts = array('k', 'm', 'b', 't');
$x_count_parts = count($x_array) - 1;
$x_display = $x;
$x_display = $x_array[0] . ((int) $x_array[1][0] !== 0 ? '.' . $x_array[1][0] : '');
$x_display .= $x_parts[$x_count_parts - 1];
return $x_display;
}
}
function getCount() {
if (is_null($this->count)) $this->getXDisplay();
return $this->count;
}
}
不要使用凌乱的返回值,只需调用与返回值相关的类方法。