php-vn-lib/lib/util.php

46 lines
973 B
PHP

<?php
/**
* Retrieves an element from an associative array or %NULL if it is not
* defined.
*/
function nullif ($map, $key)
{
return isset($map[$key]) ? $map[$key] : NULL;
}
/**
* Checks if passed $path is inside directory $dir.
*/
function checkFilePath($file, $path)
{
$checkPath = stream_resolve_include_path($path).'/';
$filePath = stream_resolve_include_path($checkPath.$file);
$len = strlen($checkPath);
return substr($filePath, 0, strlen($checkPath)) === $checkPath;
}
/**
* Checks if passed token is hyphenized.
*/
function isHyphen($token) {
return preg_match('/^[\w\-]+$/', $token);
}
/**
* Transforms an hyphen string to camelcase.
*/
function hyphenToCamelCase($string, $upperFirst = FALSE) {
$replaceFunc = function($matches) {
return strtoupper($matches[0][1]);
};
$result = preg_replace_callback('/-[a-z]/', $replaceFunc, $string);
if ($upperFirst)
$result = strtoupper($result[0]) . substr($result, 1);
return $result;
}