我需要幫助，嘗試了好幾天沒有成功，PHP新手，所以請原諒我，我有一個從數據庫表評分系統返回的關聯數組，我想實現的是嘗試來自另一個關聯數組的“分數”，迭代評分系統，直到我找到一個分數，該分數落在評分系統中連續的值之間，然后返回字母等級和備注， 看到下面已經嘗試過什么，我筋疲力盡，任何幫助將不勝感激。我嘗試過的代碼while ($row = $grade->fetch(PDO::FETCH_ASSOC)) { $data = $row; var_export($data); } //fetches the grading system whose array is seen belowwhile($row = $stmt->fetch(PDO::FETCH_ASSOC)){ $scores = $row; var_export($scores);}// fetches scores of students in testforeach($data as $key=> $grading) { foreach($scores as $key =>$values){ if($values["marks"]>=$grading["grade_min"] && $values["marks"]<=$grading["grade_max"]) print_r($values["marks"]); print_r($grading["grade"]); print_r($grading["remarks"]);}} Am trying to iterate each scores against the grading system but not successful, please help.Array( [0] => Array ( [id] => 2 [grade_min] => 1 [grade_max] => 39 [grade] => E [remarks] => Fail ) [1] => Array ( [id] => 3 [grade_min] => 40 [grade_max] => 49 [grade] => D [remarks] => Pass ) [2] => Array ( [id] => 4 [grade_min] => 50 [grade_max] => 59 [grade] => C [remarks] => Credit ) [3] => Array ( [id] => 5 [grade_min] => 60 [grade_max] => 69 [grade] => B [remarks] => Good ) [4] => Array ( [id] => 6 [grade_min] => 70 [grade_max] => 79 [grade] => A [remarks] => Very Good ) [5] => Array ( [id] => 7 [grade_min] => 80 [grade_max] => 100 [grade] => A+ [remarks] => Excellent ))我想根據評分系統數組迭代這些分數數組，并僅返回與分數介于“grade_min”和“grade_max”之間的“等級”和“備注”相匹配的“分數”
1 回答
拉莫斯之舞
TA貢獻1820條經驗 獲得超10個贊
最好迭代分數，然后迭代評分以找到分數所屬的分數。
此外，您的 if 沒有大括號，因此它將僅執行它之后的第一個句子。
// fetches the grading system whose array is seen below
while ($row = $grade->fetch(PDO::FETCH_ASSOC)) {
$data = $row;
// var_export($data); // No need to se this anymore
}
// fetches scores of students in test
while($row = $stmt->fetch(PDO::FETCH_ASSOC)){
$scores = $row;
// var_export($scores); // No need to see this anymore
}
// Iterate scores first (I don't know if you need the index or not)
foreach($scores as $scoreIndex => $score) {
// Search grading for this score (Index not needed here, just values)
foreach($data as $grading) {
if($score['marks'] >= $grading['grade_min'] && $score['marks'] <= $grading['grade_max']) {
// Score is inside this grading
// Echo, print or assign what you need here
// Then exit the loop for grading
break;
}
}
}
根據 的輸出，該數組只是一個值，沒有關聯數組，因此循環應為：$scores
// Iterate scores first (I don't know if you need the index or not)
foreach($scores as $scoreIndex => $score) {
// Search grading for this score (Index not needed here, just values)
foreach($data as $grading) {
// $score is an integer, not an array
if($score >= $grading['grade_min'] && $score <= $grading['grade_max']) {
// Score is inside this grading
// Echo here what you need
// Then exit the loop for grading
break;
}
}
}
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