以下是定義水果顏色的數(shù)據(jù)結(jié)構(gòu)示例：array( "red" => array("apple, strawberry"), "yellow" => array("lemon", "ripe mango"))實(shí)現(xiàn)函數(shù) getFruits 方法，該方法接受顏色作為字符串參數(shù)并以 JSON 格式返回該顏色的所有水果（請(qǐng)參見下面的示例）。例如，調(diào)用 $fruitcolors->getFruits("red"); 應(yīng)該返回：{“顏色”：“紅色”，“水果”：[“蘋果”，“草莓”]}如果調(diào)用沒有該 $fruitcolors- getFruits("violet"); 的水果；顏色，它應(yīng)該返回：{“顏色”：“紫羅蘭”，“水果”：[] }<?phpclass FruitColor{ private $fruitcolor; function FruitColor($fruitcolor) { $this->fruitcolor = $fruitcolor; } public function getFruits($color) { // @todo: implement here return NULL; }}$fruitcolor = new FruitColor(array( "red" => array("apple", "strawberry"), "yellow" => array("lemon", "ripe mango")));echo $fruitcolor->getFruits("red");echo "\n";echo $fruitcolor->getFruits("violet");
3 回答
鴻蒙傳說
TA貢獻(xiàn)1865條經(jīng)驗(yàn) 獲得超7個(gè)贊
試試這個(gè)：
class FruitColor {
private $fruitcolor;
function __construct($fruitcolor)
{
$this->fruitcolor = $fruitcolor;
}
public function getFruits($color)
{
$fruits = array();
if (isset($this->fruitcolor[$color])) {
$fruits = $this->fruitcolor[$color];
}
return json_encode(array("color" => $color, "fruits" => $fruits));
}
}
慕慕森
TA貢獻(xiàn)1856條經(jīng)驗(yàn) 獲得超17個(gè)贊
class FruitColor{
private $fruitcolor;
public function __construct( $fruitcolor ){
$this->fruitcolor = $fruitcolor;
}
public function getFruits( $color ){
if( array_key_exists( $color, $this->fruitcolor ) ){
return json_encode( (object)array('color'=>$color, 'fruits' => $this->fruitcolor[ $color ]) );
}
return json_encode( (object)array('color'=>$color, 'fruits' => array() ) );
}
}
$arr=array(
"red" => array("apple", "strawberry"),
"yellow" => array("lemon", "ripe mango")
);
$obj=new FruitColor( $arr );
$red=$obj->getFruits( 'red' );
$yellow=$obj->getFruits( 'yellow' );
$violet=$obj->getFruits( 'violet' );
printf('<pre>%s</pre>',print_r( $red,1));
printf('<pre>%s</pre>',print_r( $yellow,1));
printf('<pre>%s</pre>',print_r( $violet,1));
將輸出：
{"color":"red","fruits":["apple","strawberry"]}
{"color":"yellow","fruits":["lemon","ripe mango"]}
{"color":"violet","fruits":[]}
皈依舞
TA貢獻(xiàn)1851條經(jīng)驗(yàn) 獲得超3個(gè)贊
這可能是您正在尋找的內(nèi)容：
<?php
class FruitColor {
private $data;
function FruitColor($fruitcolors) {
$this->data = $fruitcolors;
}
public function getFruits($color) {
$fruits = [];
if (isset($this->data[$color]) && is_array($this->data[$color])) {
$fruits = $this->data[$color];
}
return json_encode(array("color" => $color, "fruits" => $fruits));
}
}
$fruitcolor = new FruitColor([
"red" => ["apple", "strawberry"],
"yellow" => ["lemon", "ripe mango"]
]);
var_dump($fruitcolor->getFruits("red"));
var_dump($fruitcolor->getFruits("yellow"));
var_dump($fruitcolor->getFruits("violet"));
輸出顯然是：
string(47) "{"color":"red","fruits":["apple","strawberry"]}"
string(50) "{"color":"yellow","fruits":["lemon","ripe mango"]}"
string(30) "{"color":"violet","fruits":[]}"
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