Camel Case to Spaces or Underscore – PHP Code

Most of the php development project, I need to convert camelcase strings to space-separated strings. Recently while working on a project, I found I needed to convert camelcase strings to underscore separation.

Camel case is frequently used in programming and data storage. Here are a couple of ways to convert it. As usual, feel free to leave better methods in the comments below.

CamelCase to Underscore–

//example: parseServerInfo to parse_server_info
$string = preg_replace(’/(?<=\\w)(?=[A-Z])/',"_$1", $string);
$string = strtolower($string);

CamelCase to Spaces–

//example:BachJS to Bach J S
$string = preg_replace(’/(?<=\\w)(?=[A-Z])/’,” $1″, $string);
$string = trim($string);

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