www: json

added json to create dynamic webpage with ajax

www: json
added json to create dynamic webpage with ajax
f8f6c72d · anne munoz · Adam Wujek · 26f8b73a · f8f6c72d
Commit f8f6c72d authored Feb 17, 2017 by anne munoz Committed by Adam Wujek Aug 02, 2017
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json.php userspace/rootfs_override/var/www/json.php +73 -0

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--- a/userspace/rootfs_override/var/www/json.php
+++ b/userspace/rootfs_override/var/www/json.php
+<?php
+
+/*
+ * JSON FUNCTIONS for dynamic send-receive info
+ *
+ * @author Anne M. <anne@sevensols.com>
+ *
+ */
+
+function __json_encode( $data ) {            
+    if( is_array($data) || is_object($data) ) { 
+        $islist = is_array($data) && ( empty($data) || array_keys($data) === range(0,count($data)-1) ); 
+        
+        if( $islist ) { 
+            $json = '[' . implode(',', array_map('__json_encode', $data) ) . ']'; 
+        } else { 
+            $items = Array(); 
+            foreach( $data as $key => $value ) { 
+                $items[] = __json_encode("$key") . ':' . __json_encode($value); 
+            } 
+            $json = '{' . implode(',', $items) . '}'; 
+        } 
+    } elseif( is_string($data) ) { 
+        # Escape non-printable or Non-ASCII characters. 
+        # I also put the \\ character first, as suggested in comments on the 'addclashes' page. 
+        $string = '"' . addcslashes($data, "\\\"\n\r\t/" . chr(8) . chr(12)) . '"'; 
+        $json    = ''; 
+        $len    = strlen($string); 
+        # Convert UTF-8 to Hexadecimal Codepoints. 
+        for( $i = 0; $i < $len; $i++ ) { 
+            
+            $char = $string[$i]; 
+            $c1 = ord($char); 
+            
+            # Single byte; 
+            if( $c1 <128 ) { 
+                $json .= ($c1 > 31) ? $char : sprintf("\\u%04x", $c1); 
+                continue; 
+            } 
+            
+            # Double byte 
+            $c2 = ord($string[++$i]); 
+            if ( ($c1 & 32) === 0 ) { 
+                $json .= sprintf("\\u%04x", ($c1 - 192) * 64 + $c2 - 128); 
+                continue; 
+            } 
+            
+            # Triple 
+            $c3 = ord($string[++$i]); 
+            if( ($c1 & 16) === 0 ) { 
+                $json .= sprintf("\\u%04x", (($c1 - 224) <<12) + (($c2 - 128) << 6) + ($c3 - 128)); 
+                continue; 
+            } 
+                
+            # Quadruple 
+            $c4 = ord($string[++$i]); 
+            if( ($c1 & 8 ) === 0 ) { 
+                $u = (($c1 & 15) << 2) + (($c2>>4) & 3) - 1; 
+            
+                $w1 = (54<<10) + ($u<<6) + (($c2 & 15) << 2) + (($c3>>4) & 3); 
+                $w2 = (55<<10) + (($c3 & 15)<<6) + ($c4-128); 
+                $json .= sprintf("\\u%04x\\u%04x", $w1, $w2); 
+            } 
+        } 
+    } else { 
+        # int, floats, bools, null 
+        $json = strtolower(var_export( $data, true )); 
+    } 
+    return $json; 
+} 
+
+
+?>