Need help how to use preg_replace_callback - php

Question

I have this code which returns:
float(-70.869444444444)
I can see using var_dump that it finds all coordinates, but only one is displayed.
How do I modify below code to display all coordinates transferred to degree format and also display text?
Wanted result should be:
-70.869 -6.35 test -127.49 more test second line -127.35
Code
$str60 = 'W07052 W0623 test E12727 more test second line E12725';
preg_match_all('/([EWSN])([0-9]{3})([0-9]{2})/ms', $str60, $matches);
$result60 = DMS2Decimal($degrees = (int) $matches[2][0], $minutes = (int) $matches[3][0], $seconds = 10, $direction = strtolower($matches[1][0]));
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) {
$decimal = false;
//var_dump($decimal);
}
//minutes must be integer or float between 0 and 59
elseif (!is_numeric($minutes) || $minutes < 0 || $minutes > 59) {
$decimal = false;
//var_dump($decimal);
}
//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)) {
$decimal = false;
//var_dump($decimal);
} 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 $decimal;
}
var_dump($matches);
var_dump($result60);

Answer 1

Yes, preg_replace_callback is what you want. I tweaked your regular expression as I assumed you wanted to catch"W0623."
I also cleaned up your function a bit, though the only change in output was to round it to 3 decimal places. The rest was just organizing your conditions and can be ignored if you prefer.
function DMS2Decimal($degrees = 0, $minutes = 0, $seconds = 0, $direction = 'n')
{
//converts DMS coordinates to decimal
//returns false on bad inputs, decimal on success
$d = strtolower($direction);
if (
//degrees must be integer between 0 and 180
(is_numeric($degrees) && $degrees >= 0 && $degrees <= 180) &&
//minutes must be integer or float between 0 and 59
(is_numeric($minutes) && $minutes >= 0 && $minutes <= 59) &&
//seconds must be integer or float between 0 and 59
(is_numeric($seconds) && $seconds >= 0 && $seconds <= 59) &&
//direction must be n, s, e or w, case-insensitive
(in_array($d, ['n', 's', 'e', 'w']))
) {
$decimal = $degrees + ($minutes / 60) + ($seconds / 3600);
//reverse for south or west coordinates; north is assumed
if ($d == 's' || $d == 'w') {
$decimal *= -1;
}
return round($decimal, 3);
} else {
return false;
}
}
$str60 = 'W07052 W0623 test E12727 more test second line E12725';
$result60 = preg_replace_callback(
"/([EWSN])([0-9]{3})([0-9]{1,2})/ms",
function($m) {return DMS2Decimal((int)$m[2], (int)$m[3], 10, $m[1]);},
$str60
);
echo $result60;
Output:
-70.869 -62.053 test 127.453 more test second line 127.419

Answer 2

The script below might return your desired result. I'm not sure if I have given correct input values to the function, it is based on this, where NWSE are the direction, the next {2}digits might be Degree, {2} digits after that might be the Minute and the remaining digits might be the Second, which may or may not be a float number.
$str60 = 'N404536 W73592.4 test E73592.4 more test second line S73592.4';
$split_strings = preg_split('/\s/s', $str60);
foreach ($split_strings as $value) {
if (preg_match('/([EWSN][0-9\.]{4,})/ms', $value)) {
$result60 .= DMS2Decimal(
$degrees = (int) substr($value, 1, 2), // Not sure, this might return degrees - e.g., W{73}592.4
$minutes = (int) substr($value, 3, 2), // Not sure, this might return minutes - e.g., W735{92}.4
$seconds = substr($value, 5) != null ? (int) substr($value, 5) : 0, // Not sure, this checks if second is available or place zero - e.g., W7359{2.4}
$direction = substr($value, 0, 1) // This is direction East West North South - e.g., {W}73592.4
) . " ";
} else {
$result60 .= $value . " ";
}
}
var_dump($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) {
$decimal = false;
//var_dump($decimal);
}
//minutes must be integer or float between 0 and 59
elseif (!is_numeric($minutes) || $minutes < 0 || $minutes > 59) {
$decimal = false;
//var_dump($decimal);
}
//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)) {
$decimal = false;
//var_dump($decimal);
} 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;
}
Output
string(56) "40.76 -73.984 test 73.984 more test second line -73.984 "