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   1  <?php
   2  
   3  /**
   4   * @see       https://github.com/laminas/laminas-diactoros for the canonical source repository
   5   * @copyright https://github.com/laminas/laminas-diactoros/blob/master/COPYRIGHT.md
   6   * @license   https://github.com/laminas/laminas-diactoros/blob/master/LICENSE.md New BSD License
   7   */
   8  
   9  declare(strict_types=1);
  10  
  11  namespace Laminas\Diactoros;
  12  
  13  use function stream_get_contents;
  14  
  15  /**
  16   * Caching version of php://input
  17   */
  18  class PhpInputStream extends Stream
  19  {
  20      /**
  21       * @var string
  22       */
  23      private $cache = '';
  24  
  25      /**
  26       * @var bool
  27       */
  28      private $reachedEof = false;
  29  
  30      /**
  31       * @param  string|resource $stream
  32       */
  33      public function __construct($stream = 'php://input')
  34      {
  35          parent::__construct($stream, 'r');
  36      }
  37  
  38      /**
  39       * {@inheritdoc}
  40       */
  41      public function __toString() : string
  42      {
  43          if ($this->reachedEof) {
  44              return $this->cache;
  45          }
  46  
  47          $this->getContents();
  48          return $this->cache;
  49      }
  50  
  51      /**
  52       * {@inheritdoc}
  53       */
  54      public function isWritable() : bool
  55      {
  56          return false;
  57      }
  58  
  59      /**
  60       * {@inheritdoc}
  61       */
  62      public function read($length) : string
  63      {
  64          $content = parent::read($length);
  65          if (! $this->reachedEof) {
  66              $this->cache .= $content;
  67          }
  68  
  69          if ($this->eof()) {
  70              $this->reachedEof = true;
  71          }
  72  
  73          return $content;
  74      }
  75  
  76      /**
  77       * {@inheritdoc}
  78       */
  79      public function getContents($maxLength = -1) : string
  80      {
  81          if ($this->reachedEof) {
  82              return $this->cache;
  83          }
  84  
  85          $contents     = stream_get_contents($this->resource, $maxLength);
  86          $this->cache .= $contents;
  87  
  88          if ($maxLength === -1 || $this->eof()) {
  89              $this->reachedEof = true;
  90          }
  91  
  92          return $contents;
  93      }
  94  }