79 lines
2.1 KiB
PHP
79 lines
2.1 KiB
PHP
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<?php
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namespace Stripe\Util;
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/**
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* CaseInsensitiveArray is an array-like class that ignores case for keys.
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*
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* It is used to store HTTP headers. Per RFC 2616, section 4.2:
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* Each header field consists of a name followed by a colon (":") and the field value. Field names
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* are case-insensitive.
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*
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* In the context of stripe-php, this is useful because the API will return headers with different
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* case depending on whether HTTP/2 is used or not (with HTTP/2, headers are always in lowercase).
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*/
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class CaseInsensitiveArray implements \ArrayAccess, \Countable, \IteratorAggregate
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{
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private $container = [];
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public function __construct($initial_array = [])
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{
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$this->container = \array_change_key_case($initial_array, \CASE_LOWER);
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}
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#[\ReturnTypeWillChange]
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public function count()
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{
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return \count($this->container);
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}
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#[\ReturnTypeWillChange]
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public function getIterator()
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{
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return new \ArrayIterator($this->container);
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}
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#[\ReturnTypeWillChange]
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public function offsetSet($offset, $value)
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{
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$offset = static::maybeLowercase($offset);
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if (null === $offset) {
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$this->container[] = $value;
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} else {
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$this->container[$offset] = $value;
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}
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}
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#[\ReturnTypeWillChange]
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public function offsetExists($offset)
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{
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$offset = static::maybeLowercase($offset);
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return isset($this->container[$offset]);
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}
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#[\ReturnTypeWillChange]
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public function offsetUnset($offset)
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{
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$offset = static::maybeLowercase($offset);
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unset($this->container[$offset]);
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}
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#[\ReturnTypeWillChange]
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public function offsetGet($offset)
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{
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$offset = static::maybeLowercase($offset);
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return isset($this->container[$offset]) ? $this->container[$offset] : null;
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}
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private static function maybeLowercase($v)
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{
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if (\is_string($v)) {
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return \strtolower($v);
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}
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return $v;
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}
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}
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