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Q:

PHP, Create a mySQL table with a variable name that includes an underscore

Hey all,

I am currently working on a PHP project and I need to create a MySQL table with a variable name that includes an underscore. However, I'm not quite sure how to go about doing this. I have tried searching online and in the PHP documentation, but I haven't found a clear answer.

To provide a little context, in my project, I have a variable called $category_name which holds the name of a category. I want to create a new table in my MySQL database for each category, with the table name being the category name itself. For instance, if $category_name is "sports_news", then I would like to create a table named "sports_news" in my database.

I have successfully created tables in MySQL using static table names, but I'm unsure how to proceed when the table name is a variable containing an underscore. Can someone please guide me on how to achieve this?

Any help or suggestions would be greatly appreciated.

Thanks in advance!

All Replies

jerrold.bode

Hey folks,

I ran into a similar issue not too long ago while working on my PHP project. I needed to create a MySQL table with a variable name that had an underscore in it. It took me a bit of trial and error, but I finally found a solution that worked perfectly for me.

To create a table with a variable name containing an underscore, you can make use of string interpolation or concatenation. Here's how you can do it:

php
$category_name = "sports_news";
$table_name = $category_name;

// Replace the underscore with double underscores
$table_name = str_replace('_', '__', $table_name);

// MySQL query to create the table
$query = "CREATE TABLE {$table_name} (
id INT(11) NOT NULL AUTO_INCREMENT,
// add your table columns here
PRIMARY KEY (id)
)";

// Execute the query using MySQLi or PDO


In this method, I replaced the single underscore with double underscores in the table name using the `str_replace()` function. By doing so, MySQL will treat the table name correctly and create the table as expected.

I hope this approach helps you out with creating your MySQL tables dynamically. If you have any further queries or need assistance with anything else, feel free to ask.

Best regards!

romaguera.providenci

Hey everyone,

I recently encountered a similar situation where I needed to create MySQL tables with variable names containing underscores. Figuring out how to achieve this took me some time, but ultimately, I found a reliable solution that worked for me.

To create a table with a variable name that includes an underscore, one option is to use concatenation and escape characters. So, assuming you have the category name stored in the variable $category_name, you can create the table like this:

php
$category_name = "sports_news";
$table_name = $category_name; // No need for backticks this time

// Escape the underscore in the table name
$table_name = str_replace('_', '\_', $table_name);

// MySQL query to create the table
$query = "CREATE TABLE $table_name (
id INT(11) NOT NULL AUTO_INCREMENT,
... // your table columns go here
PRIMARY KEY (id)
)";

// Execute the query using MySQLi or PDO


In this approach, I used the `str_replace()` function to replace any underscores in the table name with the escape sequence '\_'. This ensures that MySQL treats the underscore as a literal character, rather than as a wildcard when executing the query.

I hope this helps you in creating MySQL tables with variable names containing underscores. If you have any further questions or need assistance with anything else, feel free to ask.

Best regards!

gutmann.brent

Hey there,

I recently faced a similar situation while working on a project where I needed to create MySQL tables with variable names that included underscores. The good news is that it can be done!

To achieve this, you can make use of backticks (`) around the table name when executing the MySQL query. By enclosing the table name in backticks, you can include underscores or any other special characters without any issues. Here's an example:

php
$category_name = "sports_news";
$table_name = "`" . $category_name . "`";

// MySQL query to create the table
$query = "CREATE TABLE " . $table_name . " (
id INT(11) NOT NULL AUTO_INCREMENT,
... // add your table columns here
PRIMARY KEY (id)
)";

// Execute the query using MySQLi or PDO


By wrapping the table name in backticks, you ensure that MySQL treats it as a single entity, even if it contains underscores or other special characters.

I hope this approach helps you with creating your tables dynamically. Feel free to ask if you have any further questions or if there's anything else I can assist you with.

Best regards!

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