International PHP Conference 2015

yaml_parse_file

(PECL yaml >= 0.4.0)

yaml_parse_fileParse a YAML stream from a file

Description

mixed yaml_parse_file ( string $filename [, int $pos = 0 [, int &$ndocs [, array $callbacks ]]] )

Convert all or part of a YAML document stream read from a file to a PHP variable.

Parameters

filename

Path to the file.

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.

Return Values

Returns the value encoded in input in appropriate PHP type or FALSE on failure. If pos is -1 an array will be returned with one entry for each document found in the stream.

Notes

Warning

Processing untrusted user input with yaml_parse_file() 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.

See Also

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User Contributed Notes 2 notes

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4
Jesse Donat
4 years ago
This is entirely dependent on type detection - as far as I can find there is no way to force a type and for instance when you have a very long integer as a value - in my case 1313035348823 it gets limited to 2147483647 - PHP's max integer.
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0
Arne L.
24 days ago
As Jesse Donat mentioned the type will be infered automatically. To enforce some type you can use the callback facility like this:

<?php
function cb_yaml_date($value, $tag, $flags) {
    return new
DateTime($value);
}

$yaml = <<<YAML
event1:
  name: My Event
  date: !date 25.05.2001
YAML;

$ndocs = 0;
$data = yaml_parse($yaml, 0, $ndocs, array('!date' => 'cb_yaml_date'));

print_r($data);
?>

The above example will output something similar to:

    Array
    (
        [event1] => Array
            (
                [name] => My Event
                [date] => DateTime Object
                    (
                        [date] => 2001-05-25 00:00:00
                        [timezone_type] => 3
                        [timezone] => Europe/Berlin
                    )
   
            )
   
    )

BTW if you want to have large numbers you are probably using BC Math. Thus, you simple enclose your number in quotes:

<?php
$yaml
= <<<YAML
largenumber: '14695760472279668267313200104308'
YAML;
?>
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