(PHP 5 >= 5.4.0, PHP 7)
JsonSerializable::jsonSerialize — 指锟斤拷锟斤拷要锟斤拷锟斤拷锟叫伙拷锟斤拷 JSON 锟斤拷锟斤拷锟斤拷
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Example #1 JsonSerializable::jsonSerialize() 锟斤拷锟斤拷 returning an array
<?php
class ArrayValue implements JsonSerializable {
public function __construct(array $array) {
$this->array = $array;
}
public function jsonSerialize() {
return $this->array;
}
}
$array = [1, 2, 3];
echo json_encode(new ArrayValue($array), JSON_PRETTY_PRINT);
?>
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[
1,
2,
3
]
Example #2 JsonSerializable::jsonSerialize() 锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷 array
<?php
class ArrayValue implements JsonSerializable {
public function __construct(array $array) {
$this->array = $array;
}
public function jsonSerialize() {
return $this->array;
}
}
$array = ['foo' => 'bar', 'quux' => 'baz'];
echo json_encode(new ArrayValue($array), JSON_PRETTY_PRINT);
?>
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{
"foo": "bar",
"quux": "baz"
}
Example #3 JsonSerializable::jsonSerialize() 锟斤拷锟斤拷 锟斤拷锟斤拷一锟斤拷 integer
<?php
class IntegerValue implements JsonSerializable {
public function __construct($number) {
$this->number = (integer) $number;
}
public function jsonSerialize() {
return $this->number;
}
}
echo json_encode(new IntegerValue(1), JSON_PRETTY_PRINT);
?>
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1
Example #4 JsonSerializable::jsonSerialize() 锟斤拷锟斤拷 锟斤拷锟斤拷一锟斤拷 string
<?php
class StringValue implements JsonSerializable {
public function __construct($string) {
$this->string = (string) $string;
}
public function jsonSerialize() {
return $this->string;
}
}
echo json_encode(new StringValue('Hello!'), JSON_PRETTY_PRINT);
?>
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"Hello!"