How can PHP developers efficiently convert a string into a series of numerical values based on predefined mappings, as described in the forum thread?

To efficiently convert a string into a series of numerical values based on predefined mappings in PHP, developers can create an associative array that maps each character in the string to a numerical value. Then, iterate through the string and use the mapping array to convert each character into its corresponding numerical value. Finally, concatenate these numerical values to form the desired series. 

$string = "hello";
$mapping = [
    'h' => 8,
    'e' => 5,
    'l' => 12,
    'o' => 15
];

$numericValues = [];
foreach(str_split($string) as $char){
    $numericValues[] = $mapping[$char];
}

$series = implode('', $numericValues);
echo $series; // Output: 85121515

Keywords

PHP string conversion numerical values predefined mappings forum thread

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