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Why are all columns returned as a single concatenation when using mysqli_fetch_array in a while loop?

Patricia Arquette
Release: 2024-11-02 19:47:30
Original
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Why are all columns returned as a single concatenation when using mysqli_fetch_array in a while loop?

mysqli_fetch_array While Loop Column Issues

When iterating over a MySQL query using the mysqli_fetch_array function, you may encounter a scenario where all columns are returned as a single concatenation rather than separate elements.

To resolve this, create an array to store the rows retrieved from the mysqli_fetch_array loop:

<code class="php">$posts = array();
while ($row = mysqli_fetch_array($result)) {
    $posts[] = $row;
}</code>
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Now, each element of the $posts array will be an array containing the individual columns:

<code class="php">$posts[0]['post_id'] // Returns the value of post_id
$posts[0]['post_title'] // Returns the value of post_title</code>
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If you require all column values as a single string, you can achieve this using:

<code class="php">$fullRow = $row[0] . $row[1] . $row[2];</code>
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However, this will result in a concatenated string rather than separate elements. For individual access to each column, the array-based solution is recommended.

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source:php.cn
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