Subiendo proyecto completo sin restricciones de git ignore

vendor/mercadopago/dx-php/samples/checkout-buttons/basic-preference/button.php

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+<?php
+
+    # Crear un boton de pago a partir de una preferencia con atributos requeridos minimos
+
+    require_once dirname(__FILE__).'/../../index.php';
+
+    $preference = new MercadoPago\Preference();
+
+    # Building an item
+
+    $item = new MercadoPago\Item();
+    $item->id = "00001";
+    $item->title = "item"; 
+    $item->quantity = 1;
+    $item->unit_price = 100;
+
+    $preference->items = array($item);
+
+    $preference->save(); # Save the preference and send the HTTP Request to create
+
+    # Return the HTML code for button
+
+    echo "<a href='$preference->sandbox_init_point'> Pagar </a>";
+
+?>

vendor/mercadopago/dx-php/samples/checkout-buttons/full-preference/button.php

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+<?php
+
+    # Crear un boton de pago a partir de una preferencia con atributos requeridos minimos
+
+    require_once dirname(__FILE__).'/../../index.php';
+
+    $preference = new MercadoPago\Preference();
+
+    # Building an item
+
+    $item1 = new MercadoPago\Item();
+    $item1->id = "00001";
+    $item1->title = "item"; 
+    $item1->quantity = 1;
+    $item1->unit_price = 100;
+
+    $item2 = new MercadoPago\Item();
+    $item2->id = "00002";
+    $item2->title = "item"; 
+    $item2->quantity = 1;
+    $item2->unit_price = 100;
+
+    $preference->items = array($item1, $item2);
+
+    $preference->payment_methods = array(
+    "excluded_payment_types" => array(
+        array("id" => "credit_card")
+    ),
+    "installments" => 12
+    );
+
+    $preference->external_reference = "A Custom External Reference";
+
+    $preference->save(); # Save the preference and send the HTTP Request to create
+
+    # Return the HTML code for button
+
+    echo "<a href='$preference->sandbox_init_point'> Pagar </a>";
+
+?>