functions/yf_array_funcs.php

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<?php

// Originally took this from laravel-framework

if ( ! function_exists('array_add')) {
    /**
     * Add an element to an array using "dot" notation if it doesn't exist.
     *
     * @param  array   $array
     * @param  string  $key
     * @param  mixed   $value
     * @return array
     */
    function array_add($array, $key, $value)
    {
        if (array_get($array, $key) === null) {
            array_set($array, $key, $value);
        }
        return $array;
    }
}

if ( ! function_exists('array_build')) {
    /**
     * Build a new array using a callback.
     *
     * @param  array  $array
     * @param  \Closure  $callback
     * @return array
     */
    function array_build($array, Closure $callback)
    {
        $results = [];
        foreach ($array as $key => $value) {
            list($innerKey, $innerValue) = call_user_func($callback, $key, $value);
            $results[$innerKey] = $innerValue;
        }
        return $results;
    }
}

if ( ! function_exists('array_divide')) {
    /**
     * Divide an array into two arrays. One with keys and the other with values.
     *
     * @param  array  $array
     * @return array
     */
    function array_divide($array)
    {
        return [array_keys($array), array_values($array)];
    }
}

if ( ! function_exists('array_dot')) {
    /**
     * Flatten a multi-dimensional associative array with dots.
     *
     * @param  array   $array
     * @param  string  $prepend
     * @return array
     */
    function array_dot($array, $prepend = '')
    {
        $results = [];
        foreach ($array as $key => $value) {
            if (is_array($value)) {
                $results = array_merge($results, array_dot($value, $prepend . $key . '.'));
            } else {
                $results[$prepend . $key] = $value;
            }
        }
        return $results;
    }
}

if ( ! function_exists('array_except')) {
    /**
     * Get all of the given array except for a specified array of items.
     *
     * @param  array  $array
     * @param  array  $keys
     * @return array
     */
    function array_except($array, $keys)
    {
        return array_diff_key($array, array_flip((array) $keys));
    }
}

if ( ! function_exists('array_fetch')) {
    /**
     * Fetch a flattened array of a nested array element.
     *
     * @param  array   $array
     * @param  string  $key
     * @return array
     */
    function array_fetch($array, $key)
    {
        foreach (explode('.', $key) as $segment) {
            $results = [];
            foreach ($array as $value) {
                $value = (array) $value;
                $results[] = $value[$segment];
            }
            $array = array_values($results);
        }
        return array_values($results);
    }
}

if ( ! function_exists('array_first')) {
    /**
     * Return the first element in an array passing a given truth test.
     *
     * @param  array    $array
     * @param  Closure  $callback
     * @param  mixed    $default
     * @return mixed
     */
    function array_first($array, $callback, $default = null)
    {
        foreach ($array as $key => $value) {
            if (call_user_func($callback, $key, $value)) {
                return $value;
            }
        }
        return value($default);
    }
}

if ( ! function_exists('array_last')) {
    /**
     * Return the last element in an array passing a given truth test.
     *
     * @param  array    $array
     * @param  Closure  $callback
     * @param  mixed    $default
     * @return mixed
     */
    function array_last($array, $callback, $default = null)
    {
        return array_first(array_reverse($array), $callback, $default);
    }
}

if ( ! function_exists('array_flatten')) {
    /**
     * Flatten a multi-dimensional array into a single level.
     *
     * @param  array  $array
     * @return array
     */
    function array_flatten($array)
    {
        $return = [];
        array_walk_recursive($array, function ($x) use (&$return) {
            $return[] = $x;
        });
        return $return;
    }
}

if ( ! function_exists('array_forget')) {
    /**
     * Remove an array item from a given array using "dot" notation.
     *
     * @param  array   $array
     * @param  string  $key
     */
    function array_forget(&$array, $key)
    {
        $keys = explode('.', $key);
        while (count((array) $keys) > 1) {
            $key = array_shift($keys);
            if ( ! isset($array[$key]) || ! is_array($array[$key])) {
                return;
            }
            $array = &$array[$key];
        }
        unset($array[array_shift($keys)]);
    }
}

if ( ! function_exists('array_get')) {
    /**
     * Get an item from an array using "dot" notation.
     *
     * @param  array   $array
     * @param  string  $key
     * @param  mixed   $default
     * @return mixed
     */
    function array_get($array, $key, $default = null)
    {
        if ($key === null) {
            return $array;
        }
        if (isset($array[$key])) {
            return $array[$key];
        }
        foreach (explode('.', $key) as $segment) {
            if ( ! is_array($array) || ! array_key_exists($segment, $array)) {
                return value($default);
            }
            $array = $array[$segment];
        }
        return $array;
    }
}

if ( ! function_exists('array_only')) {
    /**
     * Get a subset of the items from the given array.
     *
     * @param  array  $array
     * @param  array  $keys
     * @return array
     */
    function array_only($array, $keys)
    {
        return array_intersect_key($array, array_flip((array) $keys));
    }
}

if ( ! function_exists('array_pluck')) {
    /**
     * Pluck an array of values from an array.
     *
     * @param  array   $array
     * @param  string  $value
     * @param  string  $key
     * @return array
     */
    function array_pluck($array, $value, $key = null)
    {
        $results = [];
        foreach ($array as $item) {
            $itemValue = is_object($item) ? $item->{$value} : $item[$value];
            // If the key is "null", we will just append the value to the array and keep
            // looping. Otherwise we will key the array using the value of the key we
            // received from the developer. Then we'll return the final array form.
            if ($key === null) {
                $results[] = $itemValue;
            } else {
                $itemKey = is_object($item) ? $item->{$key} : $item[$key];
                $results[$itemKey] = $itemValue;
            }
        }
        return $results;
    }
}

if ( ! function_exists('array_pull')) {
    /**
     * Get a value from the array, and remove it.
     *
     * @param  array   $array
     * @param  string  $key
     * @param  mixed   $default
     * @return mixed
     */
    function array_pull(&$array, $key, $default = null)
    {
        $value = array_get($array, $key, $default);
        array_forget($array, $key);
        return $value;
    }
}

if ( ! function_exists('array_set')) {
    /**
     * Set an array item to a given value using "dot" notation.
     *
     * If no key is given to the method, the entire array will be replaced.
     *
     * @param  array   $array
     * @param  string  $key
     * @param  mixed   $value
     * @return array
     */
    function array_set(&$array, $key, $value)
    {
        if ($key === null) {
            return $array = $value;
        }
        $keys = explode('.', $key);
        while (count((array) $keys) > 1) {
            $key = array_shift($keys);
            // If the key doesn't exist at this depth, we will just create an empty array
            // to hold the next value, allowing us to create the arrays to hold final
            // values at the correct depth. Then we'll keep digging into the array.
            if ( ! isset($array[$key]) || ! is_array($array[$key])) {
                $array[$key] = [];
            }
            $array = &$array[$key];
        }
        $array[array_shift($keys)] = $value;
        return $array;
    }
}

if ( ! function_exists('array_where')) {
    /**
     * Filter the array using the given Closure.
     *
     * @param  array  $array
     * @param  \Closure  $callback
     * @return array
     */
    function array_where($array, Closure $callback)
    {
        $filtered = [];
        foreach ($array as $key => $value) {
            if (call_user_func($callback, $key, $value)) {
                $filtered[$key] = $value;
            }
        }
        return $filtered;
    }
}


if ( ! function_exists('data_get')) {
    /**
     * Get an item from an array or object using "dot" notation.
     *
     * @param  mixed   $target
     * @param  string  $key
     * @param  mixed   $default
     * @return mixed
     *
     * @throws \InvalidArgumentException
     */
    function data_get($target, $key, $default = null)
    {
        if (is_array($target)) {
            return array_get($target, $key, $default);
        } elseif (is_object($target)) {
            return object_get($target, $key, $default);
        }
    }
}

if ( ! function_exists('head')) {
    /**
     * Get the first element of an array. Useful for method chaining.
     *
     * @param  array  $array
     * @return mixed
     */
    function head($array)
    {
        return reset($array);
    }
}


if ( ! function_exists('last')) {
    /**
     * Get the last element from an array.
     *
     * @param  array  $array
     * @return mixed
     */
    function last($array)
    {
        return end($array);
    }
}


if ( ! function_exists('object_get')) {
    /**
     * Get an item from an object using "dot" notation.
     *
     * @param  object  $object
     * @param  string  $key
     * @param  mixed   $default
     * @return mixed
     */
    function object_get($object, $key, $default = null)
    {
        if ($key === null || trim($key) == '') {
            return $object;
        }
        foreach (explode('.', $key) as $segment) {
            if ( ! is_object($object) || ! isset($object->{$segment})) {
                return value($default);
            }
            $object = $object->{$segment};
        }
        return $object;
    }
}

if ( ! function_exists('value')) {
    /**
     * Return the default value of the given value.
     *
     * @param  mixed  $value
     * @return mixed
     */
    function value($value)
    {
        return $value instanceof Closure ? $value() : $value;
    }
}

if ( ! function_exists('with')) {
    /**
     * Return the given object. Useful for chaining.
     *
     * @param  mixed  $object
     * @return mixed
     */
    function with($object)
    {
        return $object;
    }
}