function extract_table($table_text)
{
$rows = explode("\n", trim($table_text));
$format = 'csv';
if (preg_match('/\\t/', $rows[0])) {
$format = 'tsv';
}
// Headings
$headings = array();
switch ($format) {
case 'tsv':
$headings = explode("\t", $rows[0]);
break;
case 'csv':
$headings = str_getcsv($rows[0]);
break;
}
// Contents
$content = array();
$nrows = count($rows);
for ($i = 1; $i < $nrows; $i++) {
switch ($format) {
case 'tsv':
$cells = explode("\t", $rows[$i]);
break;
case 'csv':
$cells = str_getcsv($rows[$i]);
break;
}
$content[] = $cells;
}
// Classify columns
$column_types = array();
$ncols = count($headings);
for ($i = 0; $i < $ncols; $i++) {
$column_types[$i] = TYPE_UNKNOWN;
// Locality
if (preg_match('/coordinates/i', $headings[$i])) {
$column_types[$i] = TYPE_LATITUDE_LONGITUDE;
}
if (preg_match('/latlong/i', $headings[$i])) {
$column_types[$i] = TYPE_LATITUDE_LONGITUDE;
}
if (preg_match('/latitude/i', $headings[$i])) {
$column_types[$i] = TYPE_LATITUDE;
}
if (preg_match('/longitude/i', $headings[$i])) {
$column_types[$i] = TYPE_LONGITUDE;
}
}
// By assumption
$column_types[0] = TYPE_OTU;
if (0) {
echo '<pre>';
print_r($headings);
print_r($column_types);
print_r($content);
echo '</pre>';
}
$data = array();
foreach ($content as $row) {
$otu = new stdclass();
$otu->label = $row[0];
$n = count($row);
for ($i = 1; $i < $n; $i++) {
//echo "i=" . $i . ' ' . $column_types[$i] . "<br/>";
switch ($column_types[$i]) {
case TYPE_LATITUDE_LONGITUDE:
if (IsLatLong($row[$i], $latlong)) {
$otu->latlong = $latlong;
}
break;
case TYPE_LATITUDE:
if (IsLatitude($row[$i], $latitude)) {
if (!isset($otu->latlong)) {
$otu->latlong = array();
}
$otu->latlong['latitude'] = $latitude;
}
break;
case TYPE_LONGITUDE:
if (IsLongitude($row[$i], $longitude)) {
if (!isset($otu->latlong)) {
$otu->latlong = array();
}
$otu->latlong['longitude'] = $longitude;
}
break;
default:
break;
}
}
$data[] = $otu;
}
/*
echo '<pre>';
print_r($data);
echo '</pre>';
*/
return $data;
}
// array_push($tests, '4°54.87\'S, 29°35.85\'E');
array_push($tests, '5° 67\'');
array_push($tests, '14°39′ S, 145°27′ E');
array_push($tests, '054°03′N–112°46′W');
array_push($tests, "38° 02' N, 32° 51' E");
array_push($tests, '42°20′ N/9°10′ E');*/
// array_push($tests, 'N 0°6\'41"; W 77°22\'28"');
//array_push($tests,'35° 56.218′ N');
//array_push($tests,'117° 54.343′ W');
//array_push($tests, 'S 01°06.18');
//array_push($tests, 'W 77°35.67');
array_push($tests, '29°55\'21.62"N');
$ok = 0;
foreach ($tests as $str) {
$latlong = array();
if (IsLatitude($str, $latlong)) {
print_r($latlong);
$ok++;
} else {
array_push($failed, $str);
}
}
// report
echo "--------------------------\n";
echo count($tests) . ' strings, ' . (count($tests) - $ok) . ' failed' . "\n";
print_r($failed);
}