RogosMagic.php

<?php
$json = file_get_contents( dirname(__FILE__) . DIRECTORY_SEPARATOR ."prdmd.json");
$json = preg_replace('/[^(\x20-\x7F)]*/','', $json);
$jsonToArray = json_decode($json, true);

scanProducts($jsonToArray);

function writeProduct( $title, $id, $product_short, $product_full, $product_price, $product_weight, $dir){

$productTemplate =
'Title:
{{title}}

----

Identifier:
{{id}}

----

Product-short-description:
{{product_short}}

----

Product-full-description:
{{product_full}}

----

Product-price:
{{product_price}}

----

Product-weight:
{{product_weight}}';


    $productTemplate = str_replace('{{title}}',$title,$productTemplate);
    $productTemplate = str_replace('{{id}}',$id,$productTemplate);
    $productTemplate = str_replace('{{product_short}}',$product_short,$productTemplate);
    $productTemplate = str_replace('{{product_full}}',$product_full,$productTemplate);
    $productTemplate = str_replace('{{product_price}}',$product_price,$productTemplate);
    $productTemplate = str_replace('{{product_weight}}',$product_weight,$productTemplate);

    $fp = fopen($dir . "/product.txt","wb");
    fwrite($fp,$productTemplate);
    fclose($fp);
}

function scanProducts (array $products){

	foreach ($products as $product) {

		$directoryProduct = dirname(__FILE__) . DIRECTORY_SEPARATOR .$product['Order'].'-'.$product['URL'];
		$titleProduct = $product['Title'];
		$idProduct = $product['ID'];
		$prodshortProduct = $product['ProdShort'];
		$prodfullProduct = $product['ProdFull'];
		$priceProduct = $product['Price'];
		$weightProduct = $product['Weight'];

		if (!file_exists($directoryProduct)) {
	    	mkdir($directoryProduct, 0777, true);
		}

		writeProduct($titleProduct, $idProduct, $prodshortProduct, $prodfullProduct, $priceProduct, $weightProduct, $directoryProduct);

	}

	echo 'all done';

}

mettendo il template $productTemplate dentro la funzione writeProduct mi sembra che abbia funzionato perchè viene re-inizializzato coi suoi segnaposto {{}}, diversamente , richiamato come "global" dopo la prima manipolazione i segnaposto non esistono più e quindi fallivano gli str_replace e veniva sempre scritto il primo