/**
* Dumps a given PHP variable to a YAML string.
*
* @param mixed $value The PHP variable to convert
*
* @return string The YAML string representing the PHP array
*
* @throws Exception When trying to dump PHP resource
*/
public static function dump($value)
{
$trueValues = '1.1' == Yaml::getSpecVersion() ? array('true', 'on', '+', 'yes', 'y') : array('true');
$falseValues = '1.1' == Yaml::getSpecVersion() ? array('false', 'off', '-', 'no', 'n') : array('false');
switch (true) {
case is_resource($value):
throw new Exception('Unable to dump PHP resources in a YAML file.');
case is_object($value):
return '!!php/object:' . serialize($value);
case is_array($value):
return self::dumpArray($value);
case null === $value:
return 'null';
case true === $value:
return 'true';
case false === $value:
return 'false';
case ctype_digit($value):
return is_string($value) ? "'{$value}'" : (int) $value;
case is_numeric($value):
return is_infinite($value) ? str_ireplace('INF', '.Inf', strval($value)) : (is_string($value) ? "'{$value}'" : $value);
case Escaper::requiresDoubleQuoting($value):
return Escaper::escapeWithDoubleQuotes($value);
case Escaper::requiresSingleQuoting($value):
return Escaper::escapeWithSingleQuotes($value);
case '' == $value:
return "''";
case preg_match(self::getTimestampRegex(), $value):
return "'{$value}'";
case in_array(strtolower($value), $trueValues):
return "'{$value}'";
case in_array(strtolower($value), $falseValues):
return "'{$value}'";
case in_array(strtolower($value), array('null', '~')):
return "'{$value}'";
default:
return $value;
}
}
/**
* Dumps a given PHP variable to a YAML string
*
* @param mixed $value The PHP variable to convert
*
* @return string The YAML string representing the PHP array
*/
public static function dumpInline($value)
{
if (is_resource($value)) {
return "null";
} elseif (is_object($value)) {
return "!!php/object:" . serialize($value);
} elseif (is_array($value)) {
return self::dumpInlineArray($value);
} elseif ($value === null) {
return "null";
} elseif ($value === true) {
return "true";
} elseif ($value === false) {
return "false";
} elseif (ctype_digit($value)) {
return is_string($value) ? "\"{$value}\"" : (int) $value;
} elseif (is_numeric($value)) {
$locale = setlocale(LC_NUMERIC, 0);
if ($locale !== false) {
setlocale(LC_NUMERIC, "C");
}
if (is_float($value)) {
$repr = (string) $value;
if (is_infinite($value)) {
$repr = str_ireplace("INF", ".Inf", $repr);
} elseif (floor($value) == $value && $repr == $value) {
// Preserve float data type since storing a whole number will result in integer value.
$repr = "!!float {$repr}";
}
} elseif (is_string($value)) {
$repr = "'{$value}'";
} else {
$repr = (string) $value;
}
if ($locale !== false) {
setlocale(LC_NUMERIC, $locale);
}
return $repr;
} elseif ($value === "") {
return "''";
} elseif (strstr($value, "\n") !== false) {
return "|\n " . preg_replace("/\\n/", "\n ", $value);
} elseif (Escaper::requiresDoubleQuoting($value)) {
return Escaper::escapeWithDoubleQuotes($value);
} elseif (Escaper::requiresSingleQuoting($value) || preg_match(Inline::getHexRegex(), $value) || preg_match(Inline::getTimestampRegex(), $value)) {
return Escaper::escapeWithSingleQuotes($value);
} else {
return $value;
}
}
