我有一个很大的city, country列表，我希望以紧凑的形式显示它们。
例如，我有以下变量
Hallands, Sweden
但是，在, and space保留两个字母并大写之后，我怎么能像这里一样显示呢。
Hallands, SW ?
答案 0 :(得分：1)
示例：
$var = explode($variable, ", ");
echo $var[0].", ".strtoupper(substr($var[1], 0, 2));
substr将得到前两个字母，strtoupper将把它们大写。
编辑：我看到你将它们放在一个变量中。我可能会首先爆炸变量，然后应用上面的方法。
答案 1 :(得分：1)
然后试试这个
$str='Hallands, Sweden';
$str=explode(',',str);
echo $str[0].','.strtoupper(substr($str[1], 0, 2));
答案 2 :(得分：0)
这样的事情：
$str = "Hallands, Sweden";
$strs = explode(',', $str);
$str_country = strtoupper(substr($strs[1], 1,2));
$str = $strs[0] . ', ' . $str_country;
print_r($str);
答案 3 :(得分：0)
这应该这样做。 'trim'用于删除单词两侧的空格。
$str = "Hallands, Sweden";
$modified = array_map('trim', explode(',', $str));
$modified = $modified[0].', '.strtoupper(substr($modified[1], 0, 2));
echo $modified;
答案 4 :(得分：0)
以下是所有步骤：
在代码中，按顺序：
// splitting
$parts = explode( ", ", $string ); // split over the comma and space
$city = $parts[0]; // city is first
$country = $parts[1]; // country is second
// shorten and uppercase
$short_country = substr( $country, 0, 2 ); // shorten to 2 chars
$short_country_uppercase = strtoupper( $short_country ); // uppercase the 2 chars
// paste back together
$new_string = $city . ", " . $short_country_uppercase;
这是不必要的长期，主要是因为它可以帮助您了解正在发生的事情。如果你愿意，你可以像其他答案一样将它缩短到一行，但是知道代码实际上做了什么有助于你学习。
答案 5 :(得分：0)
你说有一个巨大的列表，这段代码可以帮助你
<?php
$variable_seperated_with_comma="Newyork,canada,ohio,indiana";
$countries=explode(',',$fullvariable_seperated_with_comma);
foreach($countries as $country){
echo strtoupper(substr($country, 0, 2));
echo '</br>';
}
＆GT;
答案 6 :(得分：0)
正如评论中所提到的，人们将比ISO 3166-1 country codes更熟悉国家/地区名称的子字符串。
以下是ISO国家/地区代码的要点：https://gist.github.com/vxnick/380904
<?php
$string = 'Hallands, Sweden';
$ex = explode(",", $string); //Split the string
$countries_flip = array_flip( array_map('strtolower', getCountryCodeMap())); //Swap value and keys around (so we dont have to use array_search)
echo $ex[0] . ', ' . $countries_flip[trim(strtolower($ex[1]))]; //Output result
function getCountryCodeMap() {
//https://gist.github.com/vxnick/380904
return array
(
'AF' => 'Afghanistan',
'AX' => 'Aland Islands',
'AL' => 'Albania',
'DZ' => 'Algeria',
'AS' => 'American Samoa',
'AD' => 'Andorra',
'AO' => 'Angola',
'AI' => 'Anguilla',
'AQ' => 'Antarctica',
'AG' => 'Antigua And Barbuda',
'AR' => 'Argentina',
'AM' => 'Armenia',
'AW' => 'Aruba',
'AU' => 'Australia',
'AT' => 'Austria',
'AZ' => 'Azerbaijan',
'BS' => 'Bahamas',
'BH' => 'Bahrain',
'BD' => 'Bangladesh',
'BB' => 'Barbados',
'BY' => 'Belarus',
'BE' => 'Belgium',
'BZ' => 'Belize',
'BJ' => 'Benin',
'BM' => 'Bermuda',
'BT' => 'Bhutan',
'BO' => 'Bolivia',
'BA' => 'Bosnia And Herzegovina',
'BW' => 'Botswana',
'BV' => 'Bouvet Island',
'BR' => 'Brazil',
'IO' => 'British Indian Ocean Territory',
'BN' => 'Brunei Darussalam',
'BG' => 'Bulgaria',
'BF' => 'Burkina Faso',
'BI' => 'Burundi',
'KH' => 'Cambodia',
'CM' => 'Cameroon',
'CA' => 'Canada',
'CV' => 'Cape Verde',
'KY' => 'Cayman Islands',
'CF' => 'Central African Republic',
'TD' => 'Chad',
'CL' => 'Chile',
'CN' => 'China',
'CX' => 'Christmas Island',
'CC' => 'Cocos (Keeling) Islands',
'CO' => 'Colombia',
'KM' => 'Comoros',
'CG' => 'Congo',
'CD' => 'Congo, Democratic Republic',
'CK' => 'Cook Islands',
'CR' => 'Costa Rica',
'CI' => 'Cote D\'Ivoire',
'HR' => 'Croatia',
'CU' => 'Cuba',
'CY' => 'Cyprus',
'CZ' => 'Czech Republic',
'DK' => 'Denmark',
'DJ' => 'Djibouti',
'DM' => 'Dominica',
'DO' => 'Dominican Republic',
'EC' => 'Ecuador',
'EG' => 'Egypt',
'SV' => 'El Salvador',
'GQ' => 'Equatorial Guinea',
'ER' => 'Eritrea',
'EE' => 'Estonia',
'ET' => 'Ethiopia',
'FK' => 'Falkland Islands (Malvinas)',
'FO' => 'Faroe Islands',
'FJ' => 'Fiji',
'FI' => 'Finland',
'FR' => 'France',
'GF' => 'French Guiana',
'PF' => 'French Polynesia',
'TF' => 'French Southern Territories',
'GA' => 'Gabon',
'GM' => 'Gambia',
'GE' => 'Georgia',
'DE' => 'Germany',
'GH' => 'Ghana',
'GI' => 'Gibraltar',
'GR' => 'Greece',
'GL' => 'Greenland',
'GD' => 'Grenada',
'GP' => 'Guadeloupe',
'GU' => 'Guam',
'GT' => 'Guatemala',
'GG' => 'Guernsey',
'GN' => 'Guinea',
'GW' => 'Guinea-Bissau',
'GY' => 'Guyana',
'HT' => 'Haiti',
'HM' => 'Heard Island & Mcdonald Islands',
'VA' => 'Holy See (Vatican City State)',
'HN' => 'Honduras',
'HK' => 'Hong Kong',
'HU' => 'Hungary',
'IS' => 'Iceland',
'IN' => 'India',
'ID' => 'Indonesia',
'IR' => 'Iran, Islamic Republic Of',
'IQ' => 'Iraq',
'IE' => 'Ireland',
'IM' => 'Isle Of Man',
'IL' => 'Israel',
'IT' => 'Italy',
'JM' => 'Jamaica',
'JP' => 'Japan',
'JE' => 'Jersey',
'JO' => 'Jordan',
'KZ' => 'Kazakhstan',
'KE' => 'Kenya',
'KI' => 'Kiribati',
'KR' => 'Korea',
'KW' => 'Kuwait',
'KG' => 'Kyrgyzstan',
'LA' => 'Lao People\'s Democratic Republic',
'LV' => 'Latvia',
'LB' => 'Lebanon',
'LS' => 'Lesotho',
'LR' => 'Liberia',
'LY' => 'Libyan Arab Jamahiriya',
'LI' => 'Liechtenstein',
'LT' => 'Lithuania',
'LU' => 'Luxembourg',
'MO' => 'Macao',
'MK' => 'Macedonia',
'MG' => 'Madagascar',
'MW' => 'Malawi',
'MY' => 'Malaysia',
'MV' => 'Maldives',
'ML' => 'Mali',
'MT' => 'Malta',
'MH' => 'Marshall Islands',
'MQ' => 'Martinique',
'MR' => 'Mauritania',
'MU' => 'Mauritius',
'YT' => 'Mayotte',
'MX' => 'Mexico',
'FM' => 'Micronesia, Federated States Of',
'MD' => 'Moldova',
'MC' => 'Monaco',
'MN' => 'Mongolia',
'ME' => 'Montenegro',
'MS' => 'Montserrat',
'MA' => 'Morocco',
'MZ' => 'Mozambique',
'MM' => 'Myanmar',
'NA' => 'Namibia',
'NR' => 'Nauru',
'NP' => 'Nepal',
'NL' => 'Netherlands',
'AN' => 'Netherlands Antilles',
'NC' => 'New Caledonia',
'NZ' => 'New Zealand',
'NI' => 'Nicaragua',
'NE' => 'Niger',
'NG' => 'Nigeria',
'NU' => 'Niue',
'NF' => 'Norfolk Island',
'MP' => 'Northern Mariana Islands',
'NO' => 'Norway',
'OM' => 'Oman',
'PK' => 'Pakistan',
'PW' => 'Palau',
'PS' => 'Palestinian Territory, Occupied',
'PA' => 'Panama',
'PG' => 'Papua New Guinea',
'PY' => 'Paraguay',
'PE' => 'Peru',
'PH' => 'Philippines',
'PN' => 'Pitcairn',
'PL' => 'Poland',
'PT' => 'Portugal',
'PR' => 'Puerto Rico',
'QA' => 'Qatar',
'RE' => 'Reunion',
'RO' => 'Romania',
'RU' => 'Russian Federation',
'RW' => 'Rwanda',
'BL' => 'Saint Barthelemy',
'SH' => 'Saint Helena',
'KN' => 'Saint Kitts And Nevis',
'LC' => 'Saint Lucia',
'MF' => 'Saint Martin',
'PM' => 'Saint Pierre And Miquelon',
'VC' => 'Saint Vincent And Grenadines',
'WS' => 'Samoa',
'SM' => 'San Marino',
'ST' => 'Sao Tome And Principe',
'SA' => 'Saudi Arabia',
'SN' => 'Senegal',
'RS' => 'Serbia',
'SC' => 'Seychelles',
'SL' => 'Sierra Leone',
'SG' => 'Singapore',
'SK' => 'Slovakia',
'SI' => 'Slovenia',
'SB' => 'Solomon Islands',
'SO' => 'Somalia',
'ZA' => 'South Africa',
'GS' => 'South Georgia And Sandwich Isl.',
'ES' => 'Spain',
'LK' => 'Sri Lanka',
'SD' => 'Sudan',
'SR' => 'Suriname',
'SJ' => 'Svalbard And Jan Mayen',
'SZ' => 'Swaziland',
'SE' => 'Sweden',
'CH' => 'Switzerland',
'SY' => 'Syrian Arab Republic',
'TW' => 'Taiwan',
'TJ' => 'Tajikistan',
'TZ' => 'Tanzania',
'TH' => 'Thailand',
'TL' => 'Timor-Leste',
'TG' => 'Togo',
'TK' => 'Tokelau',
'TO' => 'Tonga',
'TT' => 'Trinidad And Tobago',
'TN' => 'Tunisia',
'TR' => 'Turkey',
'TM' => 'Turkmenistan',
'TC' => 'Turks And Caicos Islands',
'TV' => 'Tuvalu',
'UG' => 'Uganda',
'UA' => 'Ukraine',
'AE' => 'United Arab Emirates',
'GB' => 'United Kingdom',
'US' => 'United States',
'UM' => 'United States Outlying Islands',
'UY' => 'Uruguay',
'UZ' => 'Uzbekistan',
'VU' => 'Vanuatu',
'VE' => 'Venezuela',
'VN' => 'Viet Nam',
'VG' => 'Virgin Islands, British',
'VI' => 'Virgin Islands, U.S.',
'WF' => 'Wallis And Futuna',
'EH' => 'Western Sahara',
'YE' => 'Yemen',
'ZM' => 'Zambia',
'ZW' => 'Zimbabwe',
);
}
?>
答案 7 :(得分：0)
以下是我的表现：
// input string
$str = 'Hallands, Sweden';
// list the countries and their country codes
// i'd strtolower/strtoupper them all to make them case-insensitive, but i'll leave that up to you
$countries = array(
// ...
'Sweden' => 'SE'
// ...
);
// separate $str at the comma
$parts = explode(',', $str);
// set the vars to false to later check if they were set correctly
$county = $parts[0]; // Hallands
$country = false;
$countrycode = false;
// check that you at least have two parts
if (count($parts) > 1) {
$country = trim($parts[1]); // Sweden
$countrycode = $country; // failsafe
// check if the country is in the list
if (array_key_exists($country, $countries)) {
$countrycode = $countries[$country]; // SE
}
}
// check if the vars are set correctly
if ($country != false && $countrycode != false) {
// use them
$str = $county.', '.$countrycode; // Hallands, SE
} else {
// something went wrong
}