Oracle oci_bind_by_name无法正常工作

Question

在将绑定的语句发送到oracle时遇到问题

我下面的PHP可以正常工作，

$queryString = $_POST["searchText"];

$string = "SELECT * FROM ".$GLOBALS['tableOwner'].".".$GLOBALS['inventoryTableName'] . 
    " WHERE lower (". $_POST["searchCol"] .") LIKE '%".$queryString."%'";

$statement = oci_parse($conn, $string);

但是当我尝试将其转换为绑定语句时，它什么也不返回

$queryString = $_POST["searchText"];

$string = "SELECT * FROM ".$GLOBALS['tableOwner'].".".$GLOBALS['inventoryTableName'] . 
        " WHERE lower (". $_POST["searchCol"] .") LIKE '%:qString%'";

$statement = oci_parse($conn, $string);

oci_bind_by_name($statement, ":qString", $queryString)

我错过了什么，这导致它无法正常工作？

EDIT ================

bind不适用于LIKE关键字 必须像这样格式化字符串：

  $string = "SELECT * FROM ".$GLOBALS['tableOwner'].".".$GLOBALS['inventoryTableName']." WHERE lower (". $_POST["searchCol"] .") LIKE '%' || :qString || '%'";