在PHP中合并两个复杂的对象

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。

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",

...

},

...

},

...

},

...

}

PHP对象解决此问题的最佳方法是什么。

回答:

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 );

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]

}

*/

以上是 在PHP中合并两个复杂的对象 的全部内容, 来源链接: utcz.com/qa/404522.html

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