我的文件上有緯度和經(jīng)度數(shù)據(jù)，我正在嘗試通過(guò)convertor函數(shù)調(diào)用該數(shù)據(jù)。我試圖為該$result60行添加功能，但它不起作用。我正在嘗試傳遞該函數(shù)的值，因此它將使用DM方法計(jì)算正確的緯度和經(jīng)度。試圖$re60 = '/([EW])([0-9][0-9][0-9])([0-9][0-9])/s';$str60 = 'E16130';//$subst60 = '\\3\\2\\1';$subst60 = DMS2Decimal($degr = \\2, $mins = \\3, $secs = 0, $dir = \\1);$result60 = preg_replace($re60, $subst60, $str60);echo "The result of the substitution is ".$result60;我該如何解決這個(gè)問(wèn)題？
1 回答
慕蓋茨4494581
TA貢獻(xiàn)1850條經(jīng)驗(yàn) 獲得超11個(gè)贊
您可以使用此RegEx將輸入字符串分成3個(gè)組，其中g(shù)roup為組$1，$2并且$3可以由DMS方法調(diào)用return $decimal。
正則表達(dá)式
/([EWSN])([0-9]{3})([0-9]{2})/s
代碼
$str60 = 'E16130';
preg_match_all('/([EWSN])([0-9]{3})([0-9]{2})/s', $str60, $matches);
$result60 = DMS2Decimal($degrees = (int) $matches[2][0], $minutes = (int) $matches[3][0], $seconds = 10, $direction = strtolower($matches[1][0]));
echo "The result of the substitution: y: " . $result60;
function DMS2Decimal($degrees = 0, $minutes = 0, $seconds = 0, $direction = 'n')
{
//converts DMS coordinates to decimal
//returns false on bad inputs, decimal on success
//direction must be n, s, e or w, case-insensitive
$d = strtolower($direction);
$ok = array('n', 's', 'e', 'w');
//degrees must be integer between 0 and 180
if (!is_numeric($degrees) || $degrees < 0 || $degrees > 180) {
$decimal = false;
}
//minutes must be integer or float between 0 and 59
elseif (!is_numeric($minutes) || $minutes < 0 || $minutes > 59) {
$decimal = false;
}
//seconds must be integer or float between 0 and 59
elseif (!is_numeric($seconds) || $seconds < 0 || $seconds > 59) {
$decimal = false;
} elseif (!in_array($d, $ok)) {
$decimal = false;
} else {
//inputs clean, calculate
$decimal = $degrees + ($minutes / 60) + ($seconds / 3600);
//reverse for south or west coordinates; north is assumed
if ($d == 's' || $d == 'w') {
$decimal *= -1;
}
}
return $decimal;
}
輸出
The result of the substitution: y: 161.5027777777
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