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このドキュメントでは、 php中国語ネットマニュアル リリース
(PECL yaml >= 0.4.0)
yaml_parse — Parse a YAML stream
$input
[, int $pos
= 0
[, int &$ndocs
[, array $callbacks
]]] )Convert all or part of a YAML document stream to a PHP variable.
input
The string to parse as a YAML document stream.
pos
Document to extract from stream (-1 for all documents, 0 for first document, ...).
ndocs
If ndocs
is provided, then it is filled with the
number of documents found in stream.
callbacks
Content handlers for YAML nodes. Associative array of YAML tag => callable mappings. See parse callbacks for more details.
Returns the value encoded in input
in appropriate
PHP type 或者在失败时返回 FALSE
. If pos
is -1 an
array will be returned with one entry for each document found
in the stream.
Example #1 yaml_parse() example
<?php
$yaml = <<<EOD
---
invoice: 34843
date: "2001-01-23"
bill-to: &id001
given: Chris
family: Dumars
address:
lines: |-
458 Walkman Dr.
Suite #292
city: Royal Oak
state: MI
postal: 48046
ship-to: *id001
product:
- sku: BL394D
quantity: 4
description: Basketball
price: 450
- sku: BL4438H
quantity: 1
description: Super Hoop
price: 2392
tax: 251.420000
total: 4443.520000
comments: Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338.
...
EOD;
$parsed = yaml_parse ( $yaml );
var_dump ( $parsed );
?>
以上例程的输出类似于:
array(8) { ["invoice"]=> int(34843) ["date"]=> string(10) "2001-01-23" ["bill-to"]=> &array(3) { ["given"]=> string(5) "Chris" ["family"]=> string(6) "Dumars" ["address"]=> array(4) { ["lines"]=> string(34) "458 Walkman Dr. Suite #292" ["city"]=> string(9) "Royal Oak" ["state"]=> string(2) "MI" ["postal"]=> int(48046) } } ["ship-to"]=> &array(3) { ["given"]=> string(5) "Chris" ["family"]=> string(6) "Dumars" ["address"]=> array(4) { ["lines"]=> string(34) "458 Walkman Dr. Suite #292" ["city"]=> string(9) "Royal Oak" ["state"]=> string(2) "MI" ["postal"]=> int(48046) } } ["product"]=> array(2) { [0]=> array(4) { ["sku"]=> string(6) "BL394D" ["quantity"]=> int(4) ["description"]=> string(10) "Basketball" ["price"]=> int(450) } [1]=> array(4) { ["sku"]=> string(7) "BL4438H" ["quantity"]=> int(1) ["description"]=> string(10) "Super Hoop" ["price"]=> int(2392) } } ["tax"]=> float(251.42) ["total"]=> float(4443.52) ["comments"]=> string(68) "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338." }
Processing untrusted user input with yaml_parse() is dangerous if the use of unserialize() is enabled for nodes using the !php/object tag. This behavior can be disabled by using the yaml.decode_php ini setting.
[#1] alpacagm at gmail dot com [2012-01-11 04:32:29]
Simple usage example of interpreting custom tags:
<?php
$data=
"#yaml
---
data: !mytag bar test
...
";
function callback($value){
return str_replace('bar','baz',$value);
}
$cnt;
$array=yaml_parse($data,0,$cnt,array('!mytag'=>'callback'));
print_r($array['data']);
?>
output:
Array
(
[data] => baz test
)
note, there is a related bug in version 1.0.1 (see tracker)