在php II中转换单词到数字

Question

There is a great function here Converting words to numbers in PHP from El Yobo. But I have the problem that the string must begin with a written number. How can convert e.g. "iPhone has two hundred and thirty thousand, seven hundred and eighty-three apps" ?

The explained function:

function wordsToNumber($data) {
// Replace all number words with an equivalent numeric value
$data = strtr(
    $data,
    array(
        'zero'      => '0',
        'a'         => '1',
        'one'       => '1',
        'two'       => '2',
        'three'     => '3',
        'four'      => '4',
        'five'      => '5',
        'six'       => '6',
        'seven'     => '7',
        'eight'     => '8',
        'nine'      => '9',
        'ten'       => '10',
        'eleven'    => '11',
        'twelve'    => '12',
        'thirteen'  => '13',
        'fourteen'  => '14',
        'fifteen'   => '15',
        'sixteen'   => '16',
        'seventeen' => '17',
        'eighteen'  => '18',
        'nineteen'  => '19',
        'twenty'    => '20',
        'thirty'    => '30',
        'forty'     => '40',
        'fourty'    => '40', // common misspelling
        'fifty'     => '50',
        'sixty'     => '60',
        'seventy'   => '70',
        'eighty'    => '80',
        'ninety'    => '90',
        'hundred'   => '100',
        'thousand'  => '1000',
        'million'   => '1000000',
        'billion'   => '1000000000',
        'and'       => '',
    )
);

// Coerce all tokens to numbers
$parts = array_map(
    function ($val) {
        return floatval($val);
    },
    preg_split('/[\s-]+/', $data)
);

$stack = new SplStack; // Current work stack
$sum   = 0; // Running total
$last  = null;

foreach ($parts as $part) {
    if (!$stack->isEmpty()) {
        // We're part way through a phrase
        if ($stack->top() > $part) {
            // Decreasing step, e.g. from hundreds to ones
            if ($last >= 1000) {
                // If we drop from more than 1000 then we've finished the phrase
                $sum += $stack->pop();
                // This is the first element of a new phrase
                $stack->push($part);
            } else {
                // Drop down from less than 1000, just addition
                // e.g. "seventy one" -> "70 1" -> "70 + 1"
                $stack->push($stack->pop() + $part);
            }
        } else {
            // Increasing step, e.g ones to hundreds
            $stack->push($stack->pop() * $part);
        }
    } else {
        // This is the first element of a new phrase
        $stack->push($part);
    }

    // Store the last processed part
    $last = $part;
}

return $sum + $stack->pop();
}

Answer 1

$input = "iPhone has two hundred and thirty thousand, seven hundred and eighty-three apps";
$words = explode(' ', preg_replace("/[^A-Za-z0-9]/", ' ', $input)); //replace non-alpha characters like ',' with ' '
$res_arr = array();

foreach( $input_arr as $word ) {
    if( in_array($word, $number_words) ) { //$number_words being the large array given in your code
        $res_arr[] = $word;
    }
}
$clean_input = implode(' ', $res_arr);
//should look like: two hundred and thirty thousand seven hundred and eighty-three