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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Gielfeldt\Iterators;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Provide fielded rows of an array from a csv file.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Input:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *   ['column1 header', 'column2 header', 'column3 header'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *   ['value 1', 'value 2', 'value 3'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *   ['value 4', 'value 5', 'value 6'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * ]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Output:  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *   ['column1 header' => 'value 1', 'column2 header' => 'value 2', 'column3 header' => 'value 3'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *   ['column1 header' => 'value 4', 'column2 header' => 'value 5', 'column3 header' => 'value 6'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * ]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class CsvFileObject extends \SplFileObject implements \JsonSerializable, \Countable  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * The fields of a row.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected $fields;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public $rows;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * SplFileObject constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Setup SplFileObject in CSV read-mode.  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function __construct($filename, $open_mode = "r", $use_include_path = false, $context = null)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        parent::__construct($filename, $open_mode, $use_include_path, $context);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->setFlags(\SplFileObject::READ_CSV | \SplFileObject::READ_AHEAD | \SplFileObject::SKIP_EMPTY | \SplFileObject::DROP_NEW_LINE);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->processHeader();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Get determined fields for this csv file.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getFields()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->fields;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Fetch fields from the current row.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * This method should only be called when file is rewound.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function processHeader()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->fields = array_values(parent::current());  | 
            
                            
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                        parent::next();  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Rewind file and fetch fields from first row.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function rewind()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        parent::rewind();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->processHeader();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Map row into fields.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function current()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $row = parent::current();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $fieldedRow = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($this->fields as $idx => $field) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $fieldedRow[$field] = $row[$idx] ?? null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $fieldedRow;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function valid()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $valid = parent::valid();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$valid && !isset($this->rows) && !is_null($this->key())) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->rows = $this->key();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $valid;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Subtract 1 row from index, so that we don't include the header in our count.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function key()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return parent::key() - 1;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Add 1 to skip the header when seeking.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function seek($position)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($position < 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            throw new \LogicException("Can't seek file " . $this->getFilename() . " to negative line $position"); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return parent::seek($position + 1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Implements jsonSerialize.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             3                          | 
                
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                    public function jsonSerialize()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             3                          | 
                
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                        return iterator_to_array($this);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Implements Countable.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             3                          | 
                
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                    public function count()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             3                          | 
                
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                        if (!isset($this->rows)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             3                          | 
                
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                            $this->seek($this->getSize());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             3                          | 
                
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                            $this->rows = $this->key();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             3                          | 
                
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                        return $this->rows;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This check looks for a call to a parent method whose name is different than the method from which it is called.
Consider the following code:
The
getFirstName()method in theSoncalls the wrong method in the parent class.