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PHP: Understanding array() vs. []
In PHP development, ensuring code compatibility and avoiding errors is crucial. This question arises frequently: is there a difference between using array() and [] for arrays? Let's delve into the details.
Equivalent Array Declarations
PHP supports both array() and [] syntax for array declarations, and both are interchangeable when working with arrays. For instance, the following two statements result in identical arrays:
<code class="php">$data = array('name' => 'test', 'id' => 'theID'); $data = ['name' => 'test', 'id' => 'theID'];</code>
PHP Version Compatibility
However, it's important to note that the short array syntax [] was introduced in PHP 5.4. Therefore, if your PHP version is less than 5.4, using [] will result in an error.
Usage in Echoing
As for the short PHP tag =, it can be used to echo results without explicitly specifying the echo statement. It's generally accepted as an alternative to echo and works similarly. However, it should be noted that = and can be disabled for security reasons. Check your PHP configuration to ensure they are enabled before relying on them.
In Summary
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