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json prettify in PHP
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| /** | |
| * Indents a flat JSON string to make it more human-readable. | |
| * | |
| * http://www.daveperrett.com/articles/2008/03/11/format-json-with-php/ | |
| */ | |
| function json_indent($json) | |
| { | |
| $result = ''; | |
| $pos = 0; | |
| $strLen = strlen($json); | |
| $indentStr = ' '; | |
| $newLine = "\n"; | |
| $prevChar = ''; | |
| $outOfQuotes = true; | |
| for ($i=0; $i<=$strLen; $i++) | |
| { | |
| // Grab the next character in the string. | |
| $char = substr($json, $i, 1); | |
| // Are we inside a quoted string? | |
| if ($char == '"' && $prevChar != '\\') { | |
| $outOfQuotes = !$outOfQuotes; | |
| // If this character is the end of an element, | |
| // output a new line and indent the next line. | |
| } else if(($char == '}' || $char == ']') && $outOfQuotes) { | |
| $result .= $newLine; | |
| $pos --; | |
| for ($j=0; $j<$pos; $j++) { | |
| $result .= $indentStr; | |
| } | |
| } | |
| // Add the character to the result string. | |
| $result .= $char; | |
| // If the last character was the beginning of an element, | |
| // output a new line and indent the next line. | |
| if (($char == ',' || $char == '{' || $char == '[') && $outOfQuotes) { | |
| $result .= $newLine; | |
| if ($char == '{' || $char == '[') { | |
| $pos ++; | |
| } | |
| for ($j = 0; $j < $pos; $j++) { | |
| $result .= $indentStr; | |
| } | |
| } | |
| $prevChar = $char; | |
| } | |
| return $result; | |
| } |
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