How to get php tag array

In PHP, you can use arrays to store and process multiple similar types of data. Sometimes we want to get an array containing PHP tags, in this article we will explore how to get an array of PHP tags.

1. Using regular expressions

Using regular expressions is a common way to obtain an array of PHP tags. PHP tags start with "". You can use regular expressions to find all PHP tags.

The following is sample code:

// 获取 PHP 标签
$fileContent = file_get_contents('filename.php');
preg_match_all("//s", $fileContent, $matches);
$phpTagsArray = $matches[0];

This code will open a file named "filename.php" and store its content as a string in the variable "$fileContent". Next, use the regular expression "//s" to match all PHP tags. Finally, the matched PHP tags are stored in the array "$phpTagsArray".

2. Using PHP built-in functions

PHP provides some built-in functions to process strings, and you can use these functions to obtain PHP tag arrays. One of these functions is "explode()".

The following is the sample code:

// 获取 PHP 标签
$fileContent = file_get_contents('filename.php');
$phpTagsArray = explode('<?php &#39;, $fileContent);
array_shift($phpTagsArray);
foreach($phpTagsArray as &$phpTag){
    $phpTag = "<?php".$phpTag;
}

This code first uses the "file_get_contents()" function to read the contents of the file into the string "$fileContent". Next, use the "explode()" function to cut the string according to "

3. Using third-party libraries

In addition to using regular expressions and PHP built-in functions, you can also use some third-party libraries to obtain PHP tag arrays. For example, you can use the "php-parser" library.

The following is the sample code:

// 获取 PHP 标签
require 'vendor/autoload.php';
use PhpParser\ParserFactory;
$parser = (new ParserFactory)->create(ParserFactory::PREFER_PHP7);
$code = file_get_contents('filename.php');
$ast = $parser->parse($code);
$printer = new PhpParser\PrettyPrinter\Standard();
$phpTagsArray = array();
foreach ($ast as $node) {
    if($node instanceof PhpParser\Node\Stmt\InlineHTML){
        $phpTagsArray[] = $printer->prettyPrint(array($node));
    }
}

This code first loads the "php-parser" library and then uses the "ParserFactory()" function to create a new parser object. The "file_get_contents()" function stores the contents of the read file in the variable "$code". Next, the code is parsed using the parser object "$parser" and the result is stored in the variable "$ast". Finally, loop through each PHP node and convert the node into a printable string. Store the results in the array "$phpTagsArray".

Summary:

There are many ways to obtain the PHP tag array, including using regular expressions, using PHP built-in functions, and using third-party libraries. Which method you choose depends on your programming habits and project needs. No matter which method you choose, you should choose the method that best suits your needs and make sure that your code can handle all possible situations.

The above is the detailed content of How to get php tag array. For more information, please follow other related articles on the PHP Chinese website!