How can ord() be used to uncover hidden characters in PHP text processing?

To uncover hidden characters in PHP text processing, you can use the ord() function to get the ASCII value of each character in a string. By looping through the string and checking the ASCII values, you can identify any hidden characters that may be causing issues in your text processing. 

$text = "Hello, hidden character\x00!";
for ($i = 0; $i < strlen($text); $i++) {
    $asciiValue = ord($text[$i]);
    if ($asciiValue < 32 || $asciiValue > 126) {
        echo "Hidden character found at position $i with ASCII value $asciiValue\n";
    }
}

Keywords

ord hidden characters text processing PHP uncover

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