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<h2 class="title">Messaging operations</h2>
<p class="para">
All messaging operations are performed through calls to methods on the
connection object.
To add a message to a queue the "send" method is used, to obtain a
message from a queue the "receive" method is used. Other methods
provide publish and subscribe functionality and control of transaction
boundaries.
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<div class="example" id="example-4508">
<p><strong>Example #1 Adding a message to a queue and receiving a response</strong></p>
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<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$msg </span><span style="color: #007700">= new </span><span style="color: #0000BB">SAMMessage</span><span style="color: #007700">(</span><span style="color: #DD0000">'This is a simple text message'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$msg</span><span style="color: #007700">-></span><span style="color: #0000BB">header</span><span style="color: #007700">-></span><span style="color: #0000BB">SAM_REPLY_TO </span><span style="color: #007700">= </span><span style="color: #DD0000">'queue://receive/test'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$correlid </span><span style="color: #007700">= </span><span style="color: #0000BB">$conn</span><span style="color: #007700">-></span><span style="color: #0000BB">send</span><span style="color: #007700">(</span><span style="color: #DD0000">'queue://send/test'</span><span style="color: #007700">, </span><span style="color: #0000BB">$msg</span><span style="color: #007700">);<br /><br />if (!</span><span style="color: #0000BB">$correlid</span><span style="color: #007700">) {<br /> </span><span style="color: #FF8000">// The Send failed!<br /> </span><span style="color: #007700">echo </span><span style="color: #DD0000">"Send failed (</span><span style="color: #0000BB">$conn</span><span style="color: #007700">-></span><span style="color: #0000BB">errno</span><span style="color: #DD0000">) </span><span style="color: #0000BB">$conn</span><span style="color: #007700">-></span><span style="color: #0000BB">error</span><span style="color: #DD0000">"</span><span style="color: #007700">;<br />} else {<br /> </span><span style="color: #0000BB">$resp </span><span style="color: #007700">= </span><span style="color: #0000BB">$conn</span><span style="color: #007700">-></span><span style="color: #0000BB">receive</span><span style="color: #007700">(</span><span style="color: #DD0000">'queue://receive/test'</span><span style="color: #007700">, array(</span><span style="color: #0000BB">SAM_CORRELID </span><span style="color: #007700">=> </span><span style="color: #0000BB">$correlid</span><span style="color: #007700">));<br />}<br /></span><span style="color: #0000BB">?></span>
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