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Q:

create php variable from string

Hey everyone,

I'm relatively new to PHP and I'm currently working on a project where I need to create a PHP variable from a string. I've searched extensively but couldn't find a clear answer, so I thought I'd ask here for some guidance.

Here's my scenario: I have a string, let's say "$nameString", that holds a value like "John Doe". What I want to do is create a PHP variable, let's say "$name", and assign the value "John Doe" to it. Essentially, I want to extract the value from the string and store it in a variable.

I've tried a few things, like using the "eval()" function, but it didn't work as expected. Maybe I'm missing something or there's a better approach to achieve this. Could someone shed some light on how to accomplish this task?

Any help or suggestions would be greatly appreciated. Thanks in advance!

All Replies

kolby.schulist

Hey there,

I've encountered a similar situation before, where I needed to create a PHP variable from a string. Instead of using the "eval()" function, I found a more straightforward method using the "$$" variable variable syntax.

In your case, if you have the string "$nameString" containing the value "John Doe", you can create a variable "$name" and assign the value from the string to it like this:

php
$nameString = "John Doe";
$name = $$nameString;


This will effectively create a variable named "$name" and assign the value "John Doe" to it. The "$$" syntax allows you to use the value of a variable as the name of another variable.

I hope this helps! Let me know if you have any further questions.

qpredovic

Hey,

I totally understand your confusion with creating a PHP variable from a string. Luckily, I've come across another approach that might be useful for you.

You can utilize the "variable variables" feature in PHP. This feature allows you to dynamically create variables based on string values. In your case, you can use the curly bracket syntax to achieve this:

php
$nameString = "John Doe";
${$nameString} = $nameString;


Here, the variable variable `${$nameString}` creates a variable with the name stored in the `$nameString` string. We then assign the value "John Doe" to this variable.

With this technique, you can create variables dynamically based on string values and assign the desired values to them.

Feel free to give it a try and let me know if it works for you. If you have any further questions or need more clarification, don't hesitate to ask!

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