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| <?php | |
| // modeled after SplObjectStorage | |
| // license: WTFPL, The Unlicense, CC0, whatever | |
| /* | |
| example usage: | |
| $r1=tmpfile(); | |
| $r2=tmpfile(); | |
| $rs=new ResourceStorage(); | |
| $rs[$r1]='foo'; | |
| $rs->attach($r2,'bar'); | |
| foreach($rs as $foo){ | |
| var_dump($foo); | |
| } | |
| var_dump($rs); | |
| unset($rs[$r1]); | |
| var_dump($rs,isset($rs[$r1]),isset($rs[$r2])); | |
| $rs->detach($r2); | |
| var_dump($rs); | |
| */ | |
| class ResourceStorage implements ArrayAccess, Countable, IteratorAggregate { | |
| protected $data = [ ]; | |
| public function count() { | |
| return count ( $this->data ); | |
| } | |
| public function getIterator() { | |
| return new ArrayIterator ( $this->data ); | |
| } | |
| public function offsetSet($resource, $data) { | |
| if (! is_resource ( $resource )) { | |
| throw new \UnexpectedValueException ( 'expected resource, got ' . static::return_var_dump ( $resource ) ); | |
| } else { | |
| $this->data [( int ) $resource] = $data; | |
| } | |
| } | |
| public function offsetExists($resource): bool { | |
| return array_key_exists ( ( int ) $resource, $this->data ); | |
| } | |
| public function offsetUnset($resource) { | |
| unset ( $this->data [$resource] ); | |
| } | |
| public function offsetGet($resource) { | |
| return array_key_exists ( ( int ) $resource, $this->data ) ? $this->data [( int ) $resource] : null; | |
| } | |
| function attach($resource, $data) { | |
| if (! is_resource ( $resource )) { | |
| throw new \InvalidArgumentException (); | |
| } | |
| $this->offsetSet ( $resource, $data ); | |
| return; | |
| } | |
| function detach($resource) { | |
| if (! is_resource ( $resource )) { | |
| throw new \InvalidArgumentException (); | |
| } | |
| $this->offsetUnset ( $resource ); | |
| return; | |
| } | |
| protected static function return_var_dump(): string { | |
| $args = func_get_args (); | |
| ob_start (); | |
| call_user_func_array ( 'var_dump', $args ); | |
| return ob_get_clean (); | |
| } | |
| } |
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