PHP version of Java encryption class

Hello, please see attached JSP application. This will run in Tomcat or other JSP container. If you load: [login to view URL] It will print the original string "abc123" and an encrypted version of the string based on Rijndael AES Block Cypher (256-bit key length, 256-bit block length, 32-byte blocks, ECB mode, with ASCII encoding (encrypted data is expected to be provided as a string with each character having been converted to a 2-byte HEX value) We need a pure PHP version of this. The test case is that it should print the exact encrypted string as JSP/Java version. PHP probably already has this cypher built in, or there are sure to be third-party classes available. Thanks!