mysql在foreach循環中插入，cron不能正常工作

如果我在瀏覽器中運行，此代碼有效。當我通過cron運行腳本時，它不能通過數組並停止一半？爲什麼是這樣？mysql在foreach循環中插入，cron不能正常工作

$url_array = array("eur-gbp","eur-aud","usd-chf","eur-usd","eur-jpy","gbp-jpy","eur-cad","eur-chf","usd-cad","usd-jpy","cad-chf","cad-jpy","gbp-usd","aud-usd","gbp-chf","chf-jpy","gbp-cad","aud-cad","aud-chf","aud-jpy","aud-nzd","eur-nzd","gbp-aud","gbp-nzd","nzd-chf","nzd-usd","nzd-cad","nzd-jpy"); 
$option_array = array(1,2,3,4,5,6,7); 

$type_array = array(1,2,3,4,5,6); 

foreach($url_array as $url_type) { 
    //code 
    foreach($option_array as $option) { 
     //code 
     foreach($duration_array as $duration) { 
      //code 
      foreach($type_array as $type) { 
       //mysql insert 

       $sql = "SELECT * FROM `data_analysis` WHERE date_time='".$date."' AND type='".$url_type."' LIMIT 1"; 
       $query = $this->db->query($sql); 

       $result = $query->fetch_assoc(); 

       if($result){ 
        $sql = "UPDATE `data_analysis` SET value='".$percentage."', price_change='".$price."', parent='1' WHERE date_time='".$date."' AND type='".$url_type."'"; 
       } else { 
        $sql = "INSERT IGNORE INTO `data_analysis` (date_time,value,price_change,type,parent) VALUES ('".$date."','".$percentage."','".$price."','".$url_type."','1')"; 
       } 
      } 
     } 
    } 
}

這不是確切的代碼，因爲它太長，但發佈但類似。代碼在瀏覽器中完美工作？通過cron運行它停在gbp-jpy？爲什麼是這樣？

有一個MySQL查詢限制？

來源

2017-06-14 mdnba50

您的腳本是否會偶爾運行一段時間？你如何通過cron調用php？您可能需要調整php-cli的php.ini中的'max_execution_time'和/或'memory_limit'值，您的web服務器上可能會有不同的設置。 – chrki

我通過cPanel調用腳本。我的max_execution_time是2小時，內存限制是無限的（-1），我已經在php.ini中設置。劇本將需要大約15分鐘。 – mdnba50

而不是使用'SELECT'後跟'INSERT'或'UPDATE'，使用'INSERT ... ON DUPLICATE KEY UPDATE'。 – Barmar

上(type, date_time)添加一個唯一索引表。然後將你的兩個查詢合併爲1.另外，使用準備好的語句。

$stmt = $this->db->prepare(" 
    INSERT INTO data_analysis (date_time, value, price_change, type, parent) 
    VALUES (?, ?, ?, ?, '1') 
    ON DUPLICATE KEY UPDATE value = VALUES(value), price_change = VALUES(price_change), parent = VALUES(parent)"); 

$stmt->bind_param("ssss", $date, $percentage, $price, $url_type); 

foreach($url_array as $url_type) { 
    //code 
    foreach($option_array as $option) { 
     //code 
     foreach($duration_array as $duration) { 
      //code 
      foreach($type_array as $type) { 
       //mysql insert 
       $stmt->execute(); 
      } 
     } 
    } 
}

來源

2017-06-14 23:48:09 Barmar

mysql在foreach循環中插入，cron不能正常工作

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