want first phone number in a text block

<?php

function strtophone($phone, $format=FALSE, $dlm='-')
{
    // HANDLE INPUT LIKE 1-800-BIG-DOGS
    $phone = strtoupper($phone);

  foreach (array('ZERO','ONE','TWO','THREE','FOUR','FIVE','SIX','SEVEN','EIGHT','NINE') as $number => $text)
  {
    $phone = str_replace($text, $number, $phone);
  }
  //http://php.net/manual/en/function.strtr.php
 // $phone=strtr($phone,'ABCDEFGHIJKLMNOPQRSTUVWXYZ','22233344455566677778889999');

    // DISCARD NON-NUMERIC CHARACTERS
    $phone = preg_replace('#\D#', '', $phone);

    // DISCARD A LEADING '1' FROM NUMBERS ENTERED LIKE 1-800-555-1212
    if ( $phone[0] == '1') $phone = substr($phone,1);

    // IF LESS THAN TEN DIGITS, IT IS INVALID
    if (strlen($phone) < 10) return FALSE;

    // IF IT STARTS WITH '0' OR '1' IT IS INVALID
    if ( $phone[0] == '0') return FALSE;
    if ( $phone[0] == '1') return FALSE;

  //SECOND DIGIT CANNOT BE '9' (YET) http://www.nanpa.com/area_codes/index.html
    if ( $phone[1] == '9') return FALSE;

    // ADD OTHER TESTS HERE AS MAY BE NEEDED

    // IF NOT FORMATTED
    if (!$format) return $phone;

    // ISOLATE THE COMPONENTS OF THE PHONE NUMBER
    $ac = substr($phone,0,3); // AREA
    $ex = substr($phone,3,3); // EXCHANGE
    $nm = substr($phone,6,4); // NUMBER
    $xt = substr($phone,10);  // EXTENSION

    // STANDARDIZE THE PRINTABLE FORMAT OF THE PHONE NUMBER LIKE 212-555-1212-1234
    $formatted_phone = $ac . $dlm . $ex . $dlm . $nm;
    if ($xt != '') $formatted_phone .= $dlm . $xt;
    return $formatted_phone;
}

$string=' sample text with more words.  Buy 1 get 2 4 free. ';

echo '<br/>1-800-5551212: '. strtophone("1-800-5551212 $string");
echo '<br/>202-537-7560: '. strtophone("202-537-7560 $string");
echo '<br/>703-356-5300 x2048: '. strtophone("703-356-5300 x2048 $string");
echo '<br/>(212) 555-1212: '. strtophone("(212) 555-1212 $string");
echo '<br/>1 + (212) 555-1212: '. strtophone("1 + (212) 555-1212 $string");
echo '<br/>2345678901: '. strtophone("2345678901 $string");
echo '<br/>12345678901: '. strtophone("12345678901 $string");
echo '<br/>two 345678901: '. strtophone("two 345678901 $string");  

Select allOpen in new window