<?php
  function convertLocation($value){
      $address = '';
      $city = '';
      if ($value) {
          if (strpos($value, '市') !== false) {
              $address = explode('市', $value)[0] . '市';
              $city = $address;
          }
          if (strpos($value, '区') !== false) {
              $address = explode('区', $value)[0] . '区';
              $city = $address;
          }
          if (strpos($address, '都') !== false) {
              $city = explode('都', $address)[1] ?? '';
          }
          if (strpos($address, '道') !== false) {
              $city = explode('道', $address)[1] ?? '';
          }
          if (strpos($address, '府') !== false) {
              $city = explode('府', $address)[1] ?? '';
          }
          if (strpos($address, '県') !== false) {
              $city = explode('県', $address)[1] ?? '';
          }
      }
      return $city;
  }
?>