我有一个包含数据的文件，我想通过Class输出它。
marketpress-data.php
<?php
//country list
$this->countries = array(
"AF" => "Afghanistan",
"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 Herzegowina",
"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, The Democratic Republic Of The",
"CK" => "Cook Islands",
"CR" => "Costa Rica",
"CI" => "Cote D’Ivoire",
"HR" => "Croatia (Local Name: Hrvatska)",
"CU" => "Cuba",
"CY" => "Cyprus",
"CZ" => "Czech Republic",
"DK" => "Denmark",
"DJ" => "Djibouti",
"DM" => "Dominica",
"DO" => "Dominican Republic",
"TP" => "East Timor",
"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",
"FX" => "France, Metropolitan",
"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",
"GN" => "Guinea",
"GW" => "Guinea-Bissau",
"GY" => "Guyana",
"HT" => "Haiti",
"HM" => "Heard And Mc Donald 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",
"IL" => "Israel",
"IT" => "Italy",
"JM" => "Jamaica",
"JP" => "Japan",
"JO" => "Jordan",
"KZ" => "Kazakhstan",
"KE" => "Kenya",
"KI" => "Kiribati",
"KP" => "Korea, Democratic People’s Republic Of",
"KR" => "Korea, Republic Of",
"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" => "Macau",
"MK" => "Macedonia, Former Yugoslav Republic Of",
"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, Republic Of",
"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",
"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",
"KN" => "Saint Kitts And Nevis",
"LC" => "Saint Lucia",
"VC" => "Saint Vincent And The 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 (Slovak Republic)",
"SI" => "Slovenia",
"SB" => "Solomon Islands",
"SO" => "Somalia",
"ZA" => "South Africa",
"GS" => "South Georgia, South Sandwich Islands",
"ES" => "Spain",
"LK" => "Sri Lanka",
"SH" => "St. Helena",
"PM" => "St. Pierre And Miquelon",
"SD" => "Sudan",
"SR" => "Suriname",
"SJ" => "Svalbard And Jan Mayen Islands",
"SZ" => "Swaziland",
"SE" => "Sweden",
"CH" => "Switzerland",
"SY" => "Syrian Arab Republic",
"TW" => "Taiwan",
"TJ" => "Tajikistan",
"TZ" => "Tanzania, United Republic Of",
"TH" => "Thailand",
"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 Minor 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 Islands",
"EH" => "Western Sahara",
"YE" => "Yemen",
"YU" => "Yugoslavia",
"ZM" => "Zambia",
"ZW" => "Zimbabwe"
);
?>
现在我使用这个课程。
class MarketPress_data {
public function get_countries() {
//load data structures
require_once(WP_PLUGIN_DIR.'/marketpress/marketpress-includes/marketpress-data.php');
return $this->countries;
}
}
$MarketPress_data = new MarketPress_data;
然后尝试使用以下方式输出数据：
foreach ($MarketPress_data->get_countries() as $key => $val) {
echo $key . ' = ' . $val;
}
现在问题是我明白了。
Fatal error: Call to a member function get_countries() on a non-object
请帮助，因为我不知道我在这里缺少什么。
答案 0 :(得分：0)
为了进一步调试，我会在调用函数之前在对象上运行var_dump，看它是否甚至被创建。那个错误告诉我它在创建对象时遇到了麻烦。