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<?php |
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namespace Fabrica\Http\Api; |
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trait ExcelTrait |
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{ |
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/** |
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* remove the empty row and trim the cell value |
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* |
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* @param array $data |
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* @return array |
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*/ |
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public function trimExcel($data) |
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{ |
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if (!is_array($data)) { |
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return []; |
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} |
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// trim the cell value |
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foreach($data as $k1 => $val) |
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{ |
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foreach($val as $k2 => $val2) |
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{ |
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$data[$k1][$k2] = trim($val2); |
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} |
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} |
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// delete the empty row |
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$data = array_filter( |
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$data, function ($v) { |
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return array_filter($v); |
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} |
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); |
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// delete the empty column |
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$data = array_filter( |
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$this->rotate($data), function ($v) { |
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return array_filter($v); |
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} |
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); |
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// rotate the array |
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$data = $this->rotate($data); |
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return $data; |
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} |
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/** |
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* arrange the data |
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* |
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* @param array $data |
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* @param array $fields |
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* @return array |
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*/ |
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public function arrangeExcel($data, $fields) |
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{ |
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$data = $this->trimExcel($data); |
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$header_index = 0; |
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while(true) |
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{ |
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$header = array_shift($data); |
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if (!$header) { |
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throw new \UnexpectedValueException('表头定位错误。', -11142); |
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} |
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if (is_array($header)) { |
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if (in_array($header[0], $fields)) { |
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break; |
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} |
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if (++$header_index > 5) { |
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throw new \UnexpectedValueException('表头定位错误。', -11142); |
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} |
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} |
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} |
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// the first row is used for the issue keys |
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if (array_search('', $header) !== false) { |
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throw new \UnexpectedValueException('表头不能有空值。', -11143); |
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} |
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// check the header title |
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if (count($header) !== count(array_unique($header))) { |
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throw new \UnexpectedValueException('表头不能有重复列。', -11144); |
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} |
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$field_keys = []; |
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foreach($header as $field) |
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{ |
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$tmp = array_search($field, $fields); |
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if ($tmp === false) { |
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throw new \UnexpectedValueException('表头有不明确列。', -11145); |
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} |
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$field_keys[] = $tmp; |
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} |
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$new_data = []; |
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foreach ($data as $item) |
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{ |
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$tmp = []; |
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foreach ($item as $key => $val) |
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{ |
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$tmp[$field_keys[$key]] = $val; |
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} |
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$new_data[] = $tmp; |
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} |
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return $new_data; |
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} |
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/** |
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* rotate the matrix |
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* |
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* @param array $matrix |
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* @return array |
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*/ |
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public function rotate(array $matrix) |
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{ |
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$ret = []; |
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foreach($matrix as $val) |
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{ |
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foreach($val as $k => $val2) |
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{ |
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$ret[$k][] = $val2; |
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} |
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} |
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return $ret; |
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} |
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} |
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SierraTecnologia /
fabrica
If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: