In what situations would using the chr() function be more appropriate for character replacement in PHP?

The chr() function in PHP is more appropriate for character replacement when you have a specific ASCII value that you want to convert to its corresponding character. This is useful when you need to replace characters with specific ASCII values, such as control characters or special characters. 

// Using chr() function to replace a character with a specific ASCII value
$ascii_value = 65; // ASCII value for 'A'
$replacement_char = chr($ascii_value);

$string = "Hello, W*rld!";
$position = 7; // Position of the character to replace
$string = substr_replace($string, $replacement_char, $position, 1);

echo $string; // Output: Hello, World!

Keywords

chr() character replacement PHP situations appropriate

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