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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>PHP Apply a Function to Every Element of an Indexed Array</title> </head> <body> <pre> <?php // Defining a callback function function myFunction($value, $index){ echo "<p>The value at index $index is $value</p>"; } // Sample array $colors = array("red", "green", "blue", "orange"); array_walk($colors, "myFunction"); ?> </pre> </body> </html>
