yaml_emit

(PECL yaml >= 0.5.0)

yaml_emit — Devuelve la representación de un valor YAML

Descripción

yaml_emit(
    mixed $data,
    int $encoding = YAML_ANY_ENCODING,
    int $linebreak = YAML_ANY_BREAK,
    array $callbacks = null
): string

Genera una representación YAML de los datos en data proporcionados.

Parámetros

data: La data se codifica. Puede ser de cualquier tipo excepto un resource.
encoding: Salida de codificación de caracteres elegidos desde YAML_ANY_ENCODING, YAML_UTF8_ENCODING, YAML_UTF16LE_ENCODING, YAML_UTF16BE_ENCODING.
linebreak: Estilo de salida de línea de salto desde: YAML_ANY_BREAK, YAML_CR_BREAK, YAML_LN_BREAK, YAML_CRLN_BREAK.
callbacks: Gestores de contenido para emitir nodos YAML. array asociativo de referenciaciones de nombres de clase => callable. Véase emitir llamadas de retorno para más detalles.

Valores devueltos

Devuelve un string de YAML codificado si es correcto.

Historial de cambios

Versión	Descripción
PECL yaml 1.1.0	Se añadió el parámetro `callbacks`.

Ejemplos

Ejemplo #1 Ejemplo de yaml_emit()

<?php
$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"=> 980208000,
    "bill-to"=> $addr,
    "ship-to"=> $addr,
    "product"=> array(
        array(
            "sku"=> "BL394D",
            "quantity"=> 4,
            "description"=> "Basketball",
            "price"=> 450,
          ),
        array(
            "sku"=> "BL4438H",
            "quantity"=> 1,
            "description"=> "Super Hoop",
            "price"=> 2392,
          ),
      ),
    "tax"=> 251.42,
    "total"=> 4443.52,
    "comments"=> "Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338.",
  );
var_dump(yaml_emit($invoice));
?>

El resultado del ejemplo sería algo similar a:

string(628) "---
invoice: 34843
date: 980208000
bill-to:
  given: Chris
  family: Dumars
  address:
    lines: |-
      458 Walkman Dr.
              Suite #292
    city: Royal Oak
    state: MI
    postal: 48046
ship-to:
  given: Chris
  family: Dumars
  address:
    lines: |-
      458 Walkman Dr.
              Suite #292
    city: Royal Oak
    state: MI
    postal: 48046
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.
...
"

Ver también

yaml_emit_file() - Enviar la representación YAML de un valor a un fichero
yaml_parse() - Analiza una secuencia de texto en formato YAML

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User Contributed Notes 2 notes

down

josh dot sickmate at gmail dot com ¶

5 years ago

There isn't an option for indenting depth so it's always two spaces. If you want more than this you can use a simple regex.

Converting from two spaces to four:
<?php
$yaml = preg_replace('/^(  +)/m', '$1$1', $yaml);
?>

Add two more $1 into the replacement for eight spaces.

down

nsa at succhia dot cz ¶

1 year ago

Note that NULL values will be converted to the tilde character "~".

This can be somehow counter-intuitive, but that is absolutely legit, and it seems it is a standard recognized by every Yaml parser. So, don't worry about that. Yaml reference:

http://yaml.org/spec/1.2-old/spec.html#id2805071

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