php 4443 端口_PHP下处理YAML

用PHP处理YAML，常用的方法有两种：

PECL扩展需要PHP 5.2以上，SPYC 需要PHP 5.3以上。

我个人倾向于SPYC，因为PECL还需要编译安装，有的时候不方便(比如虚拟主机空间什么的)，SPYC 虽然不支持 PHP 5.2，但5.2官方也不支持了，所以也不算什么不足。

1 PECL扩展YAML

安装

标准的PECL安装步骤，这里就不罗嗦了。

代码例子

假设我们有这样一个数组：

$addr = array(

"given" => "Chris",

"family"=> "Dumars",

"address"=> array(

"lines"=> "458 Walkman Dr.

Suite #292",

"city"=> "Royal Oak",

"state"=> "MI",

"postal"=> 48046,

),

);

$invoice = array (

"invoice"=> 34843,

"date"=> "2001-01-23",

"bill-to"=> $addr,

"ship-to"=> $addr,

"product"=> array(

array(

"sku"=> "BL394D",

"quantity"=> 4,

"description"=> "Basketball",

"price"=> 450,

),

array(

"sku"=> "BL4438H",

"quantity"=> 1,

"description"=> "Super Hoop",

"price"=> 2392,

),

),

"tax"=> 251.42,

"total"=> 4443.52,

"comments"=> "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338.",

);

使用yaml_emit可以将其转化成YAML

$yaml = yaml_emit($invoice);

使用yaml_parse解析YAML：

$parsed = yaml_parse($yaml);

2 使用spyc

安装

可以使用Composer安装，当然也可以直接require_once或include.

代码示例

生成YAML：

$array[] = 'Sequence item';

$array['The Key'] = 'Mapped value';

$array[] = array('A sequence','of a sequence');

$array[] = array('first' => 'A sequence','second' => 'of mapped values');

$array['Mapped'] = array('A sequence','which is mapped');

$array['A Note'] = 'What if your text is too long?';

$array['Another Note'] = 'If that is the case, the dumper will probably fold your text by using a block. Kinda like this.';

$array['The trick?'] = 'The trick is that we overrode the default indent, 2, to 4 and the default wordwrap, 40, to 60.';

$array['Old Dog'] = "And if you want\n to preserve line breaks, \ngo ahead!";

$array['key:withcolon'] = "Should support this to";

$yaml = Spyc::YAMLDump($array,4,60);

解析YAML:

$Data = Spyc::YAMLLoad('spyc.yaml');

解析更常用，所以还提供了函数，上面的语句等价于：

$Data = spyc_load_file('spyc.yaml');