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    <p>PHP and Java are very different beasts. Translating Java to PHP is likely to be so technically difficult that it next to impossible to implement for a subset of Java / Java EE functionality that was large enough to be worthwhile.</p> <p>You'd do better either:</p> <ul> <li>learning and using PHP, </li> <li>implementing your entire server in Java, or </li> <li>using a bridge that allows you to call into an embedded JVM from PHP; for example, <a href="http://palava2.org/why.html" rel="nofollow noreferrer">palava</a> (thanks @Willi).</li> </ul> <p><strong>EDIT</strong></p> <p>@nhbh comments thus:</p> <blockquote> <p>PHP is very similar to Java nowadays. It supports object orientation, can be executed from the command line without web request and can maintain a global state across requests using ACP. So writing a cross compiler from Java to PHP would be rather easy. But of course it is a huge amount of work to port API calls, so I doubt it is worth the trouble.</p> </blockquote> <p>There are obvious similarities between Java and (OO) PHP. But there are fundamental differences as well that make translation problematic:</p> <ul> <li><p>There are fundamental difference between Java primitive / builtin types and their PHP equivalents. Java integer and floating point types don't map directly because of range considerations. Java Strings don't map because PHP strings use 8 bit characters. These will cause problems getting simple Java code to work correctly when translated to PHP.</p></li> <li><p>Java's threading, synchronization and the underlying memory model are probably untranslatable.</p></li> <li><p>Java dynamic classloading, reflection, security and object serialization APIs are probably untranslatable. (In the last case, I would claim that a mapping is only complete if it produces byte-for-byte compatible serializations.)</p></li> <li><p>Creating bridging APIs for the breadth of the Java APIs would be a <strong>huge</strong> task.</p></li> <li><p>Interfacing with native PHP is likely to cause problems; e.g. Java calling PHP and vice versa, and Java code dealing with objects/values created by PHP code.</p></li> </ul> <p>In summary, a full-function Java to PHP translator is probably next to impossible. The best you could hope to achieve would be a partial translator that only worked for a small subset of real-world Java code.</p>
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    1. POCompile Java into PHP?
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    1. USArjan Tijms
    1. USStephen C
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    1. COPHP is very similar to Java nowadays. It supports object orientation, can be executed from the command line without web request and can maintain a global state across requests using ACP. So writing a cross compiler from Java to PHP would be rather easy. But of course it is a huge amount of work to port API calls, so I doubt it is worth the trouble.
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      1. USHendrik Brummermann
    2. COHere is a reference: http://palava2.org/why.html
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      1. USwhiskeysierra
 

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