**\'Unexpected T_ENCAPSED_AND_WHITESPACE Error: What Causes It and How to Fix It?\'**

Unexpected T_ENCAPSED_AND_WHITESPACE Error: A Detailed Explanation and Solution

While executing a MySQL query, you may encounter the following error:

unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING

This error typically occurs when there is a missing or incorrect quotation mark in a string value in your query.

In the given case, the query is an UPDATE statement that attempts to update the commodity_quantity column in a table where the user column matches the value stored in the $rows['user'] variable. However, the issue lies in the syntax used to construct the query string.

Solution:

To fix this error and execute the query successfully, you need to modify the $sqlupdate1 variable as follows:

<code class="php">$sqlupdate1 = "UPDATE table SET commodity_quantity='$qty' WHERE user='" . $rows['user'] . "' ";</code>

By adding single quotation marks (') around the user column value within the WHERE clause, you ensure that the column value is treated as a string, resolving the unexpected T_ENCAPSED_AND_WHITESPACE error.

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