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lib/PhpSpreadsheet/Calculation/Statistical/Maximum.php

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+<?php
+
+namespace PhpOffice\PhpSpreadsheet\Calculation\Statistical;
+
+use PhpOffice\PhpSpreadsheet\Calculation\Functions;
+use PhpOffice\PhpSpreadsheet\Calculation\Information\ErrorValue;
+
+class Maximum extends MaxMinBase
+{
+    /**
+     * MAX.
+     *
+     * MAX returns the value of the element of the values passed that has the highest value,
+     *        with negative numbers considered smaller than positive numbers.
+     *
+     * Excel Function:
+     *        MAX(value1[,value2[, ...]])
+     *
+     * @param mixed ...$args Data values
+     */
+    public static function max(mixed ...$args): float|int|string
+    {
+        $returnValue = null;
+
+        // Loop through arguments
+        $aArgs = Functions::flattenArray($args);
+        foreach ($aArgs as $arg) {
+            if (ErrorValue::isError($arg)) {
+                $returnValue = $arg;
+
+                break;
+            }
+            // Is it a numeric value?
+            if ((is_numeric($arg)) && (!is_string($arg))) {
+                if (($returnValue === null) || ($arg > $returnValue)) {
+                    $returnValue = $arg;
+                }
+            }
+        }
+
+        if ($returnValue === null) {
+            return 0;
+        }
+
+        return $returnValue;
+    }
+
+    /**
+     * MAXA.
+     *
+     * Returns the greatest value in a list of arguments, including numbers, text, and logical values
+     *
+     * Excel Function:
+     *        MAXA(value1[,value2[, ...]])
+     *
+     * @param mixed ...$args Data values
+     */
+    public static function maxA(mixed ...$args): float|int|string
+    {
+        $returnValue = null;
+
+        // Loop through arguments
+        $aArgs = Functions::flattenArray($args);
+        foreach ($aArgs as $arg) {
+            if (ErrorValue::isError($arg)) {
+                $returnValue = $arg;
+
+                break;
+            }
+            // Is it a numeric value?
+            if ((is_numeric($arg)) || (is_bool($arg)) || ((is_string($arg) && ($arg != '')))) {
+                $arg = self::datatypeAdjustmentAllowStrings($arg);
+                if (($returnValue === null) || ($arg > $returnValue)) {
+                    $returnValue = $arg;
+                }
+            }
+        }
+
+        if ($returnValue === null) {
+            return 0;
+        }
+
+        return $returnValue;
+    }
+}