I use tp6.0
First of all, I thought of using the json_decode that comes with the framework to decode the string in JSON format, but found that it didn’t work.
json_decode(
string $json,
?bool $associative = null,
int $depth = 512,
int $flags = 0
): mixed
The json function can only handle UTF-8 encoded data.
associative
When true true , the JSON object will return the associative array; when false true, the JSON object will return object. When null true , the JSON object will return an associative array or object, depending on whether it flags is set in JSON_OBJECT_AS_ARRAY.
depth
The structure that needs to be decoded, its maximum nesting depth. The value must be greater than 0 or less than or equal to 2147483647.
flags
A mask consisting of JSON_BIGINT_AS_STRING, JSON_INVALID_UTF8_IGNORE, JSON_INVALID_UTF8_SUBSTITUTE, JSON_OBJECT_AS_ARRAY,JSON_THROW_ON_ERROR
html_entity_decode() is the opposite of htmlentities() in that it converts HTML entities in the corresponding characters.
More precisely, this function decodes all entities (including all numeric entities) that a) must be valid for the selected document type—that is, for XML, this function does not decode named entities that may be defined in some DTDs—and b ) whose character or set of characters in an encoded character is associated with the selected encoding and allows the document type in the selected encoding. All other entities remain as-is
stripslashes()
Dequotes a quoted string.
If you don't need to insert data into a location that needs to be escaped (such as a database), you can use stripslashes()
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<br/></p>","review":0,"score":50,"deserve":0,"topicid":561},{"answer":"A,B","review":0,"score":1,"deserve":0,"topicid":565},{"answer":"A,C","review":0,"score":2,"deserve":0,"topicid":566},{"answer":"B","review":0,"score":2,"deserve":0,"topicid":567},{"answer":"<p> <svg xmlns=\\"http://www.w3.org/2000/svg\\" width=\\"7.133ex\\" height=\\"5.555ex\\" role=\\"img\\" focusable=\\"false\\" viewBox=\\"0 -1559 3152.6 2455.3\\" xmlns:xlink=\\"http://www.w3.org/1999/xlink\\" aria-hidden=\\"true\\" style=\\"vertical-align: -2.028ex;\\"><defs><path id=\\"MJX-3-TEX-LO-222D\\" d=\\"M114 -798Q132 -824 165 -824H167Q195 -824 223 -764T275 -600T320 -391T362 -164Q365 -143 367 -133Q439 292 523 655T645 1127Q651 1145 655 1157T672 1201T699 1257T733 1306T777 1346T828 1360Q884 1360 912 1325T944 1245Q944 1220 932 1205T909 1186T887 1183Q866 1183 849 1198T832 1239Q832 1287 885 1296L882 1300Q879 1303 874 1307T866 1313Q851 1323 833 1323Q819 1323 807 1311T775 1255T736 1139T689 936T633 628Q574 293 510 -5T410 -437T355 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xlink:href=\\"#MJX-3-TEX-N-32\\"></use></g></g><g data-mml-node=\\"TeXAtom\\" transform=\\"translate(1625,-896.4) scale(0.707)\\" data-mjx-texclass=\\"ORD\\"><g data-mml-node=\\"mn\\"><use data-c=\\"32\\" xlink:href=\\"#MJX-3-TEX-N-32\\"></use></g></g></g><g data-mml-node=\\"TeXAtom\\" data-mjx-texclass=\\"ORD\\" transform=\\"translate(2652.6,0)\\"><g data-mml-node=\\"mn\\"><use data-c=\\"33\\" xlink:href=\\"#MJX-3-TEX-N-33\\"></use></g></g></g></g></svg> <br/></p>","review":0,"score":1,"deserve":0,"topicid":569},{"answer":"<p>不知道111</p>","review":0,"score":3,"deserve":0,"topicid":570},{"answer":"<p>不知道22</p>","review":0,"score":2,"deserve":0,"topicid":571},{"answer":"A","review":0,"score":2,"deserve":0,"topicid":572},{"answer":"<p> <svg xmlns=\\"http://www.w3.org/2000/svg\\" width=\\"2.891ex\\" height=\\"2.262ex\\" role=\\"img\\" focusable=\\"false\\" viewBox=\\"0 -750 1278 1000\\" xmlns:xlink=\\"http://www.w3.org/1999/xlink\\" aria-hidden=\\"true\\" style=\\"vertical-align: 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<br/></p>","review":0,"score":10,"deserve":0,"topicid":573},{"answer":"A","review":0,"score":3,"deserve":0,"topicid":574},{"answer":"A","review":0,"score":1,"deserve":0,"topicid":672},{"answer":"C","review":0,"score":3,"deserve":0,"topicid":673},{"answer":"D","review":0,"score":1,"deserve":0,"topicid":674},{"answer":"D","review":0,"score":3,"deserve":0,"topicid":675},{"answer":"D","review":0,"score":2,"deserve":0,"topicid":676},{"answer":"<p>不知道00</p>","review":0,"score":1,"deserve":0,"topicid":677}]";
$a= stripslashes(html_entity_decode($str)); $b= json_decode($a, true);
After these three functions, $b is an array we are familiar with