What are common mistakes that can lead to PHP files not running as expected?

Common mistakes that can lead to PHP files not running as expected include syntax errors, incorrect file permissions, and missing PHP extensions. To solve this issue, check for syntax errors by using a PHP syntax checker, ensure that the file has the correct permissions set (usually 644 for files), and verify that all necessary PHP extensions are installed and enabled. 

<?php
// Example PHP code snippet with correct syntax and file permissions
echo "Hello, World!";
?>

Keywords

syntax error missing semicolon incorrect variable name undefined function server configuration

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