我有两个从JSON转换的数据对象。两者都非常复杂,我想以类似于jQuery使用扩展合并两个对象的方式来合并它们。
例
JSON 1:
{ ... "blah": { "params": { "foo": { "default": "bar", "misc": "0", ... }, ... }, ... }, ... }
JSON 2:
{ ... "blah": { "params": { "foo": { "value": "val", "misc": "1", ... }, ... }, ... }, ... }
合并成
{ ... "blah": { "params": { "foo": { "default": "bar", "value": "val", "misc": "1", ... }, ... }, ... }, ... }
用PHP对象解决此问题的最佳方法是什么。
将每个JSON字符串解码为一个关联数组,合并结果并重新编码
$a1 = json_decode( $json1, true ); $a2 = json_decode( $json2, true ); $res = array_merge_recursive( $a1, $a2 ); $resJson = json_encode( $res );
更新: 如果您有特定的合并要求,则需要编写自己的合并功能。我在下面写了一篇满足您问题中要求的书。如果您有其他未提及的要求,则可能需要对其进行调整。
<?php $json1 = ' { "blah": { "params": { "foo": { "default": "bar", "misc": "0" } }, "lost": { "one": "hat", "two": "cat" } } }'; $json2 = ' { "blah": { "lost": "gone", "params": { "foo": { "value": "val", "misc": "1" } } }, "num_array": [12, 52, 38] }'; $a1 = json_decode( $json1, true ); $a2 = json_decode( $json2, true ); /* * Recursive function that merges two associative arrays * - Unlike array_merge_recursive, a differing value for a key * overwrites that key rather than creating an array with both values * - A scalar value will overwrite an array value */ function my_merge( $arr1, $arr2 ) { $keys = array_keys( $arr2 ); foreach( $keys as $key ) { if( isset( $arr1[$key] ) && is_array( $arr1[$key] ) && is_array( $arr2[$key] ) ) { $arr1[$key] = my_merge( $arr1[$key], $arr2[$key] ); } else { $arr1[$key] = $arr2[$key]; } } return $arr1; } $a3 = my_merge( $a1, $a2); $json3 = json_encode( $a3 ); echo( $json3 ); /* { "blah": { "params": { "foo": { "default": "bar", "misc": "1", "value": "val" } }, "lost": "gone" }, "num_array": [12,52,38] } */