How can variables be passed from a popup window to the main page in PHP?

To pass variables from a popup window to the main page in PHP, you can use JavaScript to set the variables in the main page's parent window. This can be achieved by accessing the parent window using `window.opener` and then setting the variables using `window.opener.variableName = value;`. Once the variables are set in the parent window, they can be accessed and used in the main page. 

<!-- Popup window PHP code -->
<script>
    // Set variables in parent window
    window.opener.variableName1 = 'value1';
    window.opener.variableName2 = 'value2';
    // Close the popup window
    window.close();
</script>

Keywords

popup window main page variables pass PHP

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