diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..13566b8
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/ex3.iml b/.idea/ex3.iml
new file mode 100644
index 0000000..c956989
--- /dev/null
+++ b/.idea/ex3.iml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..3cd772c
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/ex3.iml" filepath="$PROJECT_DIR$/.idea/ex3.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/php.xml b/.idea/php.xml
new file mode 100644
index 0000000..7e5d55a
--- /dev/null
+++ b/.idea/php.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PhpProjectSharedConfiguration" php_language_level="8.1" />
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..98323ef
--- /dev/null
+++ b/index.php
@@ -0,0 +1,22 @@
+<?php
+function CalculatePay($rate,$cost,$contribution,$period){
+    $monthRate = $rate / 12;
+    $totalRate = (1 + $monthRate) ** $period;
+    $loanSum = $cost-$contribution;
+    $monthPay = round($loanSum * $monthRate * $totalRate / ($totalRate - 1), 0);
+    $paymentsByMonth =[];
+    for ($i = 0; $i < $period; $i++){
+        $interestPayment = round($loanSum*$monthRate,0);
+        $basicPayment = $monthPay - $interestPayment;
+        $loanSum-=$basicPayment;
+        $paymentsByMonth[$i+1] = [ "basicPayment" => $basicPayment, "loanPayment" => $interestPayment, "balance" => $loanSum];
+    }
+    return $paymentsByMonth;
+}
+$rate = (float)readline("Годовая ставка:");
+$cost = (float)readline("Стоимость недвижимости:");
+$contribution = (float)readline("Размер первоначального взноса:");
+$period = (int)readline("Cрок ипотеки в месяцах:");
+print_r(CalculatePay($rate,$cost,$contribution,$period));
+
+?>
\ No newline at end of file