Why is textarea filled with mysterious white spaces?

Why is textarea filled with mysterious white spaces?

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How to read if a checkbox is checked in PHP?

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How to prevent form resubmission when page is refreshed (F5 / CTRL+R)

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submit a form in a new tab

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Get $_POST from multiple checkboxes

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Checking if form has been submitted - PHP

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What is the purpose of the html form tag

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Multiple inputs with same name through POST in php

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php $_POST array empty upon form submission

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Submitting a multidimensional array via POST with php

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Submit form without page reloading

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POST an array from an HTML form without javascript [duplicate]

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How to get a form input array into a PHP array

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How to redirect back to form with input - Laravel 5

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Form submit with AJAX passing form data to PHP without page refresh

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