(PHP ActiveX) JSON Escape and Unescape a String

The encoding mode keyword "json" was added in Chilkat v9.5.0.66 to provide the ability to escape and unescape JSON strings. See Chilkat Encodings for the full list of encoding keywords, such as "base64", "hex", "url", etc.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// Note: This example requires Chilkat version 9.5.0.66 or greater.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sb = new COM("Chilkat.StringBuilder");

$sb->Append('backslash: \\\\, A: \\u0041');
print $sb->getAsString() . "\n";

// The output is:
//    backslash: \\, A: \u0041

// Starting in Chilkat v9.5.0.66, the keyword "json" can be used
// to escape and unescape.  To escape is to encode.  To unescape is to decode.

// Unescape (decode) the string in sb.
$sb->Decode('json','utf-8');
print $sb->getAsString() . "\n";

// After JSON unescaping:
//    backslash: \, A: A

// Now JSON escape the string.
$sb->Encode('json','utf-8');
print $sb->getAsString() . "\n";

// After JSON escaping:
//    backslash: \\, A: A

// Note: The "A" is not escaped to "\u0041" because there is no need.
// The "\uXXXX" format would be produced for non-printable control chars.

?>