/**
* Extracts all double-precision floating-point numbers containing an explicit
* decimal point from a given string.
*
* @param string $input Source string containing text and numbers.
* @return float[] Array of extracted floating-point values as floats.
*/
function extractFloats(string $input): array
{
if (trim($input) === '') {
return [];
}
// Pattern matches numbers containing an explicit decimal point surrounded by digits
$pattern = '/\b\d+\.\d+\b/';
// Perform regex match to extract all matching sub-strings
if (preg_match_all($pattern, $input, $matches)) {
// Convert extracted numerical strings into float values
return array_map('floatval', $matches[0]);
}
return [];
}
// Example input string
$s = "c/c++ c# go 893725.1045 java python 3.14 php 0.0076 javascript";
// Extract floating-point numbers
$numbers = extractFloats($s);
// Display output
echo "Extracted floating-point numbers:\n";
foreach ($numbers as $number) {
echo $number . "\n";
}
/*
run:
Extracted floating-point numbers:
893725.1045
3.14
0.0076
*/
