{"id":3265,"date":"2018-03-27T15:03:22","date_gmt":"2018-03-27T07:03:22","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=3265"},"modified":"2018-03-27T15:03:22","modified_gmt":"2018-03-27T07:03:22","slug":"php%e4%b8%adjson_decode%e5%92%8cjson_encode%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/chengxujiaoben\/php\/php%e4%b8%adjson_decode%e5%92%8cjson_encode%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/","title":{"rendered":"php\u4e2djson_decode()\u548cjson_encode()\u7684\u4f7f\u7528\u65b9\u6cd5"},"content":{"rendered":"

1.json_decode()<\/p>\n

<\/strong>json_decode
\n(PHP 5 >= 5.2.0, PECL json >= 1.2.0)<\/p>\n

json_decode \u2014 \u5bf9 JSON \u683c\u5f0f\u7684\u5b57\u7b26\u4e32\u8fdb\u884c\u7f16\u7801<\/p>\n

\u8bf4\u660e
\nmixed json_decode ( string $json [, bool $assoc ] )
\n\u63a5\u53d7\u4e00\u4e2a JSON \u683c\u5f0f\u7684\u5b57\u7b26\u4e32\u5e76\u4e14\u628a\u5b83\u8f6c\u6362\u4e3a PHP \u53d8\u91cf<\/p>\n

\u53c2\u6570<\/p>\n

json
\n\u5f85\u89e3\u7801\u7684 json string \u683c\u5f0f\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n

assoc
\n\u5f53\u8be5\u53c2\u6570\u4e3a TRUE \u65f6\uff0c\u5c06\u8fd4\u56de array \u800c\u975e object \u3002<\/p>\n

\u8fd4\u56de\u503c
\nReturns an object or if the optional assoc parameter is TRUE, an associative array is instead returned.<\/p>\n

\u8303\u4f8b<\/p>\n

Example #1 json_decode() \u7684\u4f8b\u5b50<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\n<?php
\n$json = ‘{“a”:1,”b”:2,”c”:3,”d”:4,”e”:5}’;
\nvar_dump(json_decode($json));
\nvar_dump(json_decode($json, true));
\n?><\/div>\n

\u4e0a\u4f8b\u5c06\u8f93\u51fa\uff1a<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\nobject(stdClass)#1 (5) {
\n[“a”] => int(1)
\n[“b”] => int(2)
\n[“c”] => int(3)
\n[“d”] => int(4)
\n[“e”] => int(5)
\n}<\/p>\n

array(5) {
\n[“a”] => int(1)
\n[“b”] => int(2)
\n[“c”] => int(3)
\n[“d”] => int(4)
\n[“e”] => int(5)
\n}<\/p><\/div>\n

 <\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\n$data='[{“Name”:”a1″,”Number”:”123″,”Contno”:”000″,”QQNo”:””},{“Name”:”a1″,”Number”:”123″,”Contno”:”000″,”QQNo”:””},{“Name”:”a1″,”Number”:”123″,”Contno”:”000″,”QQNo”:””}]’;
\necho json_decode($data);<\/div>\n

\u7ed3\u679c\u4e3a\uff1a<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\nArray ( [0] => stdClass Object ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [1] => stdClass Object ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [2] => stdClass Object ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) )<\/div>\n

\u53ef\u4ee5\u770b\u51fa\u7ecf\u8fc7json_decode()\u7f16\u8bd1\u51fa\u6765\u7684\u662f\u5bf9\u8c61,\u73b0\u5728\u8f93\u51fajson_decode($data,true)\u8bd5\u4e0b<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\necho json_decode($data,true);<\/div>\n

\u7ed3\u679c\uff1a<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\nArray ( [0] => Array ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [1] => Array ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [2] => Array ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) )<\/div>\n

\u53ef\u4ee5\u770b\u51fa json_decode($data,true)\u8f93\u51fa\u7684\u4e00\u4e2a\u5173\u8054\u6570\u7ec4,\u7531\u6b64\u53ef\u77e5json_decode($data\uff09\u8f93\u51fa\u7684\u662f\u5bf9\u8c61,\u800cjson_decode(“$arr”,true)\u662f\u628a\u5b83\u5f3a\u5236\u751f\u6210PHP\u5173\u8054\u6570\u7ec4.<\/p>\n

2.json_encode()<\/p>\n

<\/strong>json_encode
\n(PHP 5 >= 5.2.0, PECL json >= 1.2.0)<\/p>\n

json_encode \u2014 \u5bf9\u53d8\u91cf\u8fdb\u884c JSON \u7f16\u7801<\/p>\n

Report a bug \u8bf4\u660e
\nstring json_encode ( mixed $value [, int $options = 0 ] )
\n\u8fd4\u56de value \u503c\u7684 JSON \u5f62\u5f0f<\/p>\n

Report a bug \u53c2\u6570<\/p>\n

value
\n\u5f85\u7f16\u7801\u7684 value \uff0c\u9664\u4e86resource \u7c7b\u578b\u4e4b\u5916\uff0c\u53ef\u4ee5\u4e3a\u4efb\u4f55\u6570\u636e\u7c7b\u578b<\/p>\n

\u8be5\u51fd\u6570\u53ea\u80fd\u63a5\u53d7 UTF-8 \u7f16\u7801\u7684\u6570\u636e<\/p>\n

options
\n\u7531\u4ee5\u4e0b\u5e38\u91cf\u7ec4\u6210\u7684\u4e8c\u8fdb\u5236\u63a9\u7801\uff1a JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK, JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT, JSON_UNESCAPED_UNICODE.<\/p>\n

Report a bug \u8fd4\u56de\u503c
\n\u7f16\u7801\u6210\u529f\u5219\u8fd4\u56de\u4e00\u4e2a\u4ee5 JSON \u5f62\u5f0f\u8868\u793a\u7684 string \u6216\u8005\u5728\u5931\u8d25\u65f6\u8fd4\u56de FALSE \u3002<\/p>\n

Report a bug \u66f4\u65b0\u65e5\u5fd7
\n\u7248\u672c \u8bf4\u660e
\n5.4.0 options \u53c2\u6570\u589e\u52a0\u5e38\u91cf\uff1a JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, \u548c JSON_UNESCAPED_UNICODE\u3002
\n5.3.3 options \u53c2\u6570\u589e\u52a0\u5e38\u91cf\uff1aJSON_NUMERIC_CHECK\u3002
\n5.3.0 \u589e\u52a0 options \u53c2\u6570.<\/p>\n

Report a bug \u8303\u4f8b<\/p>\n

Example #1 A json_encode() \u7684\u4f8b\u5b50<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\n<?php
\n$arr = array (‘a’=>1,’b’=>2,’c’=>3,’d’=>4,’e’=>5);<\/p>\n

echo json_encode($arr);
\n?><\/p><\/div>\n

\u4ee5\u4e0a\u4f8b\u7a0b\u4f1a\u8f93\u51fa\uff1a<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\n{“a”:1,”b”:2,”c”:3,”d”:4,”e”:5}<\/div>\n

Example #2 json_encode() \u51fd\u6570\u4e2d options \u53c2\u6570\u7684\u7528\u6cd5<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\n<?php
\n$a = array(‘<foo>’,”‘bar'”,'”baz”‘,’&blong&’, “\\xc3\\xa9”);<\/p>\n

echo “Normal: “, json_encode($a), “\\n”;
\necho “Tags: “, json_encode($a, JSON_HEX_TAG), “\\n”;
\necho “Apos: “, json_encode($a, JSON_HEX_APOS), “\\n”;
\necho “Quot: “, json_encode($a, JSON_HEX_QUOT), “\\n”;
\necho “Amp: “, json_encode($a, JSON_HEX_AMP), “\\n”;
\necho “Unicode: “, json_encode($a, JSON_UNESCAPED_UNICODE), “\\n”;
\necho “All: “, json_encode($a, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP | JSON_UNESCAPED_UNICODE), “\\n\\n”;<\/p>\n

$b = array();<\/p>\n

echo “Empty array output as array: “, json_encode($b), “\\n”;
\necho “Empty array output as object: “, json_encode($b, JSON_FORCE_OBJECT), “\\n\\n”;<\/p>\n

$c = array(array(1,2,3));<\/p>\n

echo “Non-associative array output as array: “, json_encode($c), “\\n”;
\necho “Non-associative array output as object: “, json_encode($c, JSON_FORCE_OBJECT), “\\n\\n”;<\/p>\n

$d = array(‘foo’ => ‘bar’, ‘baz’ => ‘long’);<\/p>\n

echo “Associative array always output as object: “, json_encode($d), “\\n”;
\necho “Associative array always output as object: “, json_encode($d, JSON_FORCE_OBJECT), “\\n\\n”;
\n?><\/p><\/div>\n

\u4ee5\u4e0a\u4f8b\u7a0b\u4f1a\u8f93\u51fa\uff1a<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\nNormal: [“<foo>”,”‘bar'”,”\\”baz\\””,”&blong&”,”\\u00e9″]
\nTags: [“\\u003Cfoo\\u003E”,”‘bar'”,”\\”baz\\””,”&blong&”,”\\u00e9″]
\nApos: [“<foo>”,”\\u0027bar\\u0027″,”\\”baz\\””,”&blong&”,”\\u00e9″]
\nQuot: [“<foo>”,”‘bar'”,”\\u0022baz\\u0022″,”&blong&”,”\\u00e9″]
\nAmp: [“<foo>”,”‘bar'”,”\\”baz\\””,”\\u0026blong\\u0026″,”\\u00e9″]
\nUnicode: [“<foo>”,”‘bar'”,”\\”baz\\””,”&blong&”,”\u00e9”]
\nAll: [“\\u003Cfoo\\u003E”,”\\u0027bar\\u0027″,”\\u0022baz\\u0022″,”\\u0026blong\\u0026″,”\u00e9”]<\/p>\n

Empty array output as array: []
\nEmpty array output as object: {}<\/p>\n

Non-associative array output as array: [[1,2,3]]
\nNon-associative array output as object: {“0”:{“0″:1,”1″:2,”2”:3}}<\/p>\n

Associative array always output as object: {“foo”:”bar”,”baz”:”long”}
\nAssociative array always output as object: {“foo”:”bar”,”baz”:”long”}<\/p><\/div>\n

Example #3 \u8fde\u7eed\u4e0e\u975e\u8fde\u7eed\u6570\u7ec4\u793a\u4f8b<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\n<?php
\necho “\u8fde\u7eed\u6570\u7ec4”.PHP_EOL;
\n$sequential = array(“foo”, “bar”, “baz”, “blong”);
\nvar_dump(
\n$sequential,
\njson_encode($sequential)
\n);<\/p>\n

echo PHP_EOL.”\u975e\u8fde\u7eed\u6570\u7ec4”.PHP_EOL;
\n$nonsequential = array(1=>”foo”, 2=>”bar”, 3=>”baz”, 4=>”blong”);
\nvar_dump(
\n$nonsequential,
\njson_encode($nonsequential)
\n);<\/p>\n

echo PHP_EOL.”\u5220\u9664\u4e00\u4e2a\u8fde\u7eed\u6570\u7ec4\u503c\u7684\u65b9\u5f0f\u4ea7\u751f\u7684\u975e\u8fde\u7eed\u6570\u7ec4”.PHP_EOL;
\nunset($sequential[1]);
\nvar_dump(
\n$sequential,
\njson_encode($sequential)
\n);
\n?><\/p><\/div>\n

\u4ee5\u4e0a\u4f8b\u7a0b\u4f1a\u8f93\u51fa\uff1a<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\n\u8fde\u7eed\u6570\u7ec4
\narray(4) {
\n[0]=>
\nstring(3) “foo”
\n[1]=>
\nstring(3) “bar”
\n[2]=>
\nstring(3) “baz”
\n[3]=>
\nstring(5) “blong”
\n}
\nstring(27) “[“foo”,”bar”,”baz”,”blong”]”<\/p>\n

\u975e\u8fde\u7eed\u6570\u7ec4
\narray(4) {
\n[1]=>
\nstring(3) “foo”
\n[2]=>
\nstring(3) “bar”
\n[3]=>
\nstring(3) “baz”
\n[4]=>
\nstring(5) “blong”
\n}
\nstring(43) “{“1″:”foo”,”2″:”bar”,”3″:”baz”,”4″:”blong”}”<\/p>\n

\u5220\u9664\u4e00\u4e2a\u8fde\u7eed\u6570\u7ec4\u503c\u7684\u65b9\u5f0f\u4ea7\u751f\u7684\u975e\u8fde\u7eed\u6570\u7ec4
\narray(3) {
\n[0]=>
\nstring(3) “foo”
\n[2]=>
\nstring(3) “baz”
\n[3]=>
\nstring(5) “blong”
\n}
\nstring(33) “{“0″:”foo”,”2″:”baz”,”3″:”blong”}”<\/p><\/div>\n

 <\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\n$obj->Name= ‘a1′;$obj->Number =’123’;
\n$obj->Contno= ‘000’;
\necho json_encode($obj);<\/div>\n

\u7ed3\u679c\u4e3a\uff1a<\/p>\n

<\/a>\u590d\u5236\u4ee3\u7801<\/u>\u4ee3\u7801\u5982\u4e0b:<\/div>\n
\n{“Name”:”a1″,
\n“Number”:”123″,
\n“Contno”:”000″
\n}<\/div>\n

\u53ef\u4ee5\u770b\u51fajson_encode()\u548cjson_decode()\u662f\u7f16\u8bd1\u548c\u53cd\u7f16\u8bd1\u8fc7\u7a0b\uff0c\u6ce8\u610fjson\u53ea\u63a5\u53d7utf-8\u7f16\u7801\u7684\u5b57\u7b26\uff0c\u6240\u4ee5json_encode()\u7684\u53c2\u6570\u5fc5\u987b\u662futf-8\u7f16\u7801\uff0c\u5426\u5219\u4f1a\u5f97\u5230\u7a7a\u5b57\u7b26\u6216\u8005null\u3002<\/p>\n

\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

1.json_decode() json_decode (PHP 5 >= 5.2.0, PECL js … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6,11],"tags":[],"class_list":["post-3265","post","type-post","status-publish","format-standard","hentry","category-php","category-chengxujiaoben"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=3265"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3265\/revisions"}],"predecessor-version":[{"id":3266,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3265\/revisions\/3266"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=3265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=3265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=3265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}