使用分隔符将 ereg 转换为 preg_match

我发现我使用的脚本已停止工作，因为 php 中不再支持"ereg"...这个脚本不是我自己写的，但一辈子都不知道把分隔符放在哪里。

我已将"ereg"和"ereg_replace"分别更改为"preg_match"和"preg_replace"。

    function checkPostcode($toCheck) {

  $orig = $toCheck;

  // Permitted letters depend upon their position in the postcode.
  $alpha1 = "[abcdefghijklmnoprstuwyz]";                          // Character 1
  $alpha2 = "[abcdefghklmnopqrstuvwxy]";                          // Character 2
  $alpha3 = "[abcdefghjkstuw]";                                   // Character 3
  $alpha4 = "[abehmnprvwxy]";                                     // Character 4
  $alpha5 = "[abdefghjlnpqrstuwxyz]";                             // Character 5

  // Expression for postcodes: AN NAA, ANN NAA, AAN NAA, and AANN NAA
  $pcexp[0] = '^('.$alpha1.'{1}'.$alpha2.'{0,1}[0-9]{1,2})([0-9]{1}'.$alpha5.'{2})$';

  // Expression for postcodes: ANA NAA
  $pcexp[1] =  '^('.$alpha1.'{1}[0-9]{1}'.$alpha3.'{1})([0-9]{1}'.$alpha5.'{2})$';

  // Expression for postcodes: AANA NAA
  $pcexp[2] =  '^('.$alpha1.'{1}'.$alpha2.'[0-9]{1}'.$alpha4.')([0-9]{1}'.$alpha5.'{2})$';

  // Exception for the special postcode GIR 0AA
  $pcexp[3] =  '^(gir)(0aa)$';

  // Standard BFPO numbers
  $pcexp[4] = '^(bfpo)([0-9]{1,4})$';

  // c/o BFPO numbers
  $pcexp[5] = '^(bfpo)(c'/o[0-9]{1,3})$';

  // Load up the string to check, converting into lowercase and removing spaces
  $postcode = strtolower($toCheck);
  $postcode = str_replace (' ', '', $postcode);

  // Assume we are not going to find a valid postcode
  $valid = false;

  // Check the string against the six types of postcodes
  foreach ($pcexp as $regexp) {

    if (preg_ma($regexp,$postcode, $matches)) {

      // Load new postcode back into the form element  
      $toCheck = strtoupper ($matches[1] . ' ' . $matches [2]);

      // Take account of the special BFPO c/o format
      $toCheck = preg_replace ('C'/O', 'c/o ', $toCheck);

      // Remember that we have found that the code is valid and break from loop
      $valid = true;
      break;
    }
  }

任何帮助将不胜感激。