<?php
 
$re = "#\{(?:,?\"sku-\w+\":\"?\d+\"?)+\}#i"; 
$str = "{\"sku-11430_B_S\":\"20\",\"sku-11430_B_M\":\"17\",\"sku-11430_B_L\":\"30\",\"sku-11430_B_XS\":\"13\",\"sku-11430_BL_S\":\"7\",\"sku-11430_BL_M\":\"17\",\"sku-11430_BL_L\":\"4\",\"sku-11430_BL_XS\":\"16\",\"sku-11430_O_S\":\"8\",\"sku-11430_O_M\":\"6\",\"sku-11430_O_L\":\"22\",\"sku-11430_O_XS\":\"20\",\"sku-11430_LBL_S\":\"27\",\"sku-11430_LBL_M\":\"25\",\"sku-11430_LBL_L\":\"22\",\"sku-11430_LBL_XS\":\"10\",\"sku-11430_Y_S\":\"24\",\"sku-11430_Y_M\":36,\"sku-11430_Y_L\":\"20\",\"sku-11430_Y_XS\":\"6\",\"sku-11430_RR_S\":\"4\",\"sku-11430_RR_M\":\"35\",\"sku-11430_RR_L\":\"47\",\"sku-11430_RR_XS\":\"6\"}\nDL.items_list.initItemAttr(4, '{\"sku-SV023435_B_M\":\"e90dfb84e30edf611e326eeb04d680de6c2de33453d563b7965b97195e855512\",\"sku-SV023435_BL_M\":\"9594eec95be70e7b1710f730fdda33d96c2de33453d563b7965b97195e855512\",\"sku-SV023435_PU_M\":\"b9ba865fec061c9706d2fd7ce49c0cc76c2de33453d563b7965b97195e855512\"}', '{\"price\":\"5.07\",\"products_dropship_price\":\"0.0000\",\"has_discount_price\":false}', \"\", '{\"sku-SV023435_B_M\":7,\"sku-SV023435_BL_M\":10,\"sku-SV023435_PU_M\":11}', '{\"image_e90dfb84e30edf611e326eeb04d680de\":\"http:\/\/img1.dresslink.com\/SV\/0\/SV023435-8484-SV023435-G.jpg\",\"image_9594eec95be70e7b1710f730fdda33d9\":\"http:\/\/img1.dresslink.com\/SV\/0\/SV023435-8484-SV023435-G.jpg\",\"image_b9ba865fec061c9706d2fd7ce49c0cc7\":\"http:\/\/img1.dresslink.com\/SV\/0\/SV023435-8484-SV023435_PU-G.jpg\"}');\n    }"; 
preg_match_all($re, $str, $matches);
foreach ($matches[0] as $val)
{
   $a = $val;
   $a = json_decode($a);
   print_r($a);
}

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