(PHP Extension) JSON Escape and Unescape a String

Demonstrates how to JSON escape or unescape a string.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux

<?php

include("chilkat.php");

$sb = new CkStringBuilder();

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

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

// 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.

?>