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Chapter 22. PHP

Overview
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PHP is a widely-used general-purpose scripting language that is especially suited for Web development. The PHP support is part of the camel-script module.

Adding the script module
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To use PHP in your routes you need to add a dependency on camel-script to your project as shown in Example 22.1, “Adding the camel-script dependency”.

Example 22.1. Adding the camel-script dependency

<!-- Maven POM File -->
...
<dependencies>
  ...
  <dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-script</artifactId>
    <version>${camel-version}</version>
  </dependency>
  ...
</dependencies>

Static import
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To use the php() static method in your application code, include the following import statement in your Java source files: 
import static org.apache.camel.builder.camel.script.ScriptBuilder.*;

Built-in attributes
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Table 22.1, “PHP attributes” lists the built-in attributes that are accessible when using PHP.
Expand
Table 22.1. PHP attributes
AttributeTypeValue
contextorg.apache.camel.CamelContextThe Camel Context
exchangeorg.apache.camel.ExchangeThe current Exchange
requestorg.apache.camel.MessageThe IN message
responseorg.apache.camel.MessageThe OUT message
propertiesorg.apache.camel.builder.script.PropertiesFunctionFunction with a resolve method to make it easier to use the properties component inside scripts.
The attributes all set at ENGINE_SCOPE.

Example
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Example 22.2, “Route using PHP” shows a route that uses PHP.

Example 22.2. Route using PHP

<camelContext>
  <route>
    <from uri="direct:start"/>
    <choice>
      <when>
        <language language="php">strpos(request.headers.get('user'), 'admin')!== FALSE</language>
        <to uri="seda:adminQueue"/>
      </when>
      <otherwise>
        <to uri="seda:regularQueue"/>
      </otherwise>
    </choice>
  </route>
</camelContext>

Using the properties component
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To access a property value from the properties component, invoke the resolve method on the built-in properties attribute, as follows: 
.setHeader("myHeader").php("properties.resolve(PropKey)")
Where PropKey is the key of the property you want to resolve, where the key value is of String type.
For more details about the properties component, see .
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