<?php$json = '{"name":"Test","id_test":8979,"availability":[{"dateStarts":"2019-12-14","dateEnds":"2019-12-21","dateFormat":"Dec 14 - 21, 2019","length":7,"spaces":5,"program":{"id":2,"title":"Long 2/2","program":"WESTERN ISLANDS"},"rate":{"id":2,"title":"Western Islands Program","prices":[{"custom":true,"defaultPrice":"4845","price":"4545","deck":"all cabins & decks","season":"","cabin":""}]}},{"dateStarts":"2019-12-21","dateEnds":"2019-12-28","dateFormat":"Dec 21 - 28, 2019","length":7,"spaces":"-1","program":{"id":1,"title":"Long 1/2","program":"EASTERN ISLANDS"},"rate":{"id":2,"title":"Eastern Islands Program","prices":[{"custom":false,"defaultPrice":"4845","price":"4845","deck":"all cabins & decks","season":"","cabin":""}]}},{"dateStarts":"2019-12-28","dateEnds":"2020-01-04","dateFormat":"Dec 28 - Jan 04 2020","length":7,"spaces":"-1","program":{"id":2,"title":"Long 2/2","program":"WESTERN ISLANDS"},"rate":{"id":2,"title":"Western Islands Program","prices":[{"custom":false,"defaultPrice":"4845","price":"4845","deck":"all cabins & decks","season":"","cabin":""}]}}]}'; $request_data = json_decode( $json ); ?><select class="select_availability" name="availability"> <?php foreach($request_data->availability as $ava){ if($ava->rate->id == 2){?><optgroup label="<?=$ava->program->program?>"><option><?=$ava->dateFormat?></option></optgroup><?php }}?></select>測(cè)試鏈接： http: //phpfiddle.org/main/code/gy8f-t3qq我有一個(gè)轉(zhuǎn)換為數(shù)組的 json 字符串，然后我使用foreach循環(huán)來(lái)獲取所有信息，所以基本上這是我得到的結(jié)果：<select class="select_availability" name="availability"> <optgroup label="WESTERN ISLANDS"><option>Dec 14 - 21, 2019</option></optgroup><optgroup label="EASTERN ISLANDS"><option>Dec 21 - 28, 2019</option></optgroup><optgroup label="WESTERN ISLANDS"><option>Dec 28 - Jan 04 2020</option></optgroup></select>
1 回答
MYYA
TA貢獻(xiàn)1868條經(jīng)驗(yàn) 獲得超4個(gè)贊
您需要$request_data->availability在輸出數(shù)據(jù)之前對(duì)數(shù)組進(jìn)行排序，并保持最后一個(gè)optgroup標(biāo)簽值，這樣您就不會(huì)兩次輸出相同的標(biāo)簽：
$request_data = json_decode( $json );
usort($request_data->availability, function ($a, $b) {
return strcmp($a->program->program, $b->program->program);
});
echo '<select class="select_availability" name="availability">' . "\n";
$last_program = '';
foreach($request_data->availability as $ava){
if($ava->rate->id == 2){
if ($ava->program->program != $last_program) {
if ($last_program != '') echo "</optgroup>\n";
echo '<optgroup label="' . $ava->program->program . '">' . "\n";
$last_program = $ava->program->program;
}
echo "<option>$ava->dateFormat</option>\n";
}
}
if ($last_program != '') echo "</optgroup>\n";
echo "</select>\n";
輸出：
<select class="select_availability" name="availability">
<optgroup label="EASTERN ISLANDS">
<option>Dec 21 - 28, 2019</option>
</optgroup>
<optgroup label="WESTERN ISLANDS">
<option>Dec 14 - 21, 2019</option>
<option>Dec 28 - Jan 04 2020</option>
</optgroup>
</select>
請(qǐng)注意，如果數(shù)組中的日期可能未針對(duì)每個(gè)程序進(jìn)行排序，您可以修改排序函數(shù)來(lái)處理該問題（并首先給出最早的日期）：
usort($request_data->availability, function ($a, $b) {
return strcmp($a->program->program, $b->program->program) ?: strcmp($a->dateStarts, $b->dateStarts);
});
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