php shell script for ordering email addresses

order-emails.php

#!/usr/local/bin/php
<?php
/**
 *
 * @param  [type] $address1 [description]
 * @param  [type] $address2 [description]
 * @return [type]           [description]
 */
function byemail($address1, $address2) {
  return strcasecmp(
    preg_replace('/^.*<(.*)>.*$/', '${1}', $address1),
    preg_replace('/^.*<(.*)>.*$/', '${1}', $address2)
  );
}
//|  Get options
$options = array();
foreach ($argv as $i => $arg) {
  if (strpos($arg, '-') === 0) {
    $options[] = $arg;
    array_splice($argv, $i, 1);
  }
}
//|  Test for standard iput
stream_set_blocking(STDIN, 0);
$addresses = fgetcsv(STDIN);
//|  If not, get addresses from args
if (!is_array($addresses) && isset($argv[1])){
  $addresses = explode(',', $argv[1]);
//|  No input!!
} else if (!is_array($addresses)) {
  print "Please give me some emails to order.\n";
}

//  Sort by email
if (in_array('-email', $options)) {
  usort($addresses, "byemail");
} else {
//  Sort by firstname
  natcasesort($addresses);
}
//  give it back to the user!
foreach ($addresses as $address) {
  print "$address,\n";
}
?>

pbpaste | ~/scripts/sort-email.php | pbcopy