使用電子郵件地址選擇

Question

我在PDO中使用PHP

嘗試使用電子郵件作為鍵從表中檢索記錄。 當直接在sql語句中給出電子郵件時，它可以正常工作，

但是，當我在“ $ bio_email”字段中發送電子郵件時，它不起作用。 該表中的電子郵件字段是“ varchar”類型

我嘗試了幾種選擇，但是都沒有用。 系統返回的錯誤在sql語句的右側

這是我的代碼

$bio_email      = $applicantinfo->user_email; // email from a table
$sql = "SELECT * FROM tb_files_upload WHERE ";
$sql .= " email = 'applicant1@live.ca' "; // THIS WORKS FINE
//$sql .= " email = 'danilo.gonzalez@parkinson.ca' "; // THIS WORKS FINE
//$sql .= " email = $bio_email "; // DOES NOT WORK  ... syntax to use near '@live.ca' at line 1
//$sql .= " email = {$bio_email} "; // DOES NOT WORK  ... syntax to use near '@live.ca' at line 1
//$sql .= " email = '{$bio_email}' "; // DOES NOT WORK ... syntax to use near ''applicant1@live.ca'' at line 1
//$sql .= " email = '$bio_email' "; // DOES NOT WORK ... syntax to use near ''applicant1@live.ca'' at line 1

$biosketchs = Tb_Files_Upload::find_by_sql($sql);

同樣在同一張表中，我有一個字段“ dateReceived”。 我想擁有2.5年的記錄。 你能幫我這個忙嗎？

Answer 1

我會嘗試

$sql .= " email = '$bio_email' ";

對於dateReceived，對於月份和對於年份，僅DATE_SUB。

dateReceived >= DATE_SUB(DATE_SUB(CURDATE(), INTERVAL 6 MONTH), INTERVAL 2 YEAR)

還是不要傻，直接用18個月

$sql.= " AND dateReceived >= DATE_SUB(CURDATE(), INTERVAL 18 MONTH)";