12 Simple PHP commands for WordPress administrators 2

12 Simple PHP commands for WordPress administrators

PHP /
Table Of Contents
  1. Get blog info
  2. List plugins
  3. Get theme directory in WordPress
  4. Get file content
  5. Estimate time to load page
  6. Check file size
  7. Check free space on your server
  8. Check file readability
  9. Get the URL of the WP upload directory
  10. Rename files with garbled filename
  11. Get database size
  12. Get database stats

Get blog info

See WordPress version and number of posts

PHP
global $wpdb;

$query = "SELECT COUNT(*) FROM {$wpdb->posts} WHERE post_type='post' AND post_status='publish'";
$post_count = $wpdb->get_var($query);

echo get_bloginfo('name').' is using WordPress '.get_bloginfo('version').' and has '.$post_count.' published posts.';

Example response:

Example Blog is using WordPress 5.4.1 and has 3 published posts.

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List plugins

List files in Plugins directory

PHP
$files = scandir("wp-content/plugins");

foreach($files as $file) {
  echo $file."\n";
}

Example response:

.
..
elementor
index.php
responsive-lightbox
yoast

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Get theme directory in WordPress

WordPress comes with a number of useful functions you can use to get the current theme path or URL. You can run the following PHP code to list their values:

PHP
echo 'The URL of the current theme (parent):' . PHP_EOL;
echo get_template_directory_uri() . PHP_EOL;
echo 'The URL of the current theme (child):' . PHP_EOL;
echo get_stylesheet_directory_uri() . PHP_EOL;
echo 'the URL of the current theme stylesheet URL' . PHP_EOL;
echo get_stylesheet_uri() . PHP_EOL;
echo 'the URL of the theme directory.' . PHP_EOL;
echo get_theme_root_uri() . PHP_EOL;
echo 'the URL of the file path of the themes directory without a trailing slash' . PHP_EOL;
echo get_theme_root() . PHP_EOL;
echo 'Array of themes located in the themes directory' . PHP_EOL;
echo get_theme_roots() . PHP_EOL;
echo 'The full file path to the current theme directory' . PHP_EOL;
echo get_stylesheet_directory() . PHP_EOL;
echo 'The full file path to the current theme directory' . PHP_EOL;
echo get_template_directory() . PHP_EOL;

Example response:

The URL of the current theme (parent):
https://example.com/wp-content/themes/twentytwenty
The URL of the current theme (child):
https://example.com/wp-content/themes/twentytwenty
the URL of the current theme stylesheet URL
https://example.com/wp-content/themes/twentytwenty/style.css
the URL of the theme directory.
https://example.com/wp-content/themes
the URL of the file path of the themes directory without a trailing slash
/home/www/html/example.com/wp-content/themes
Array of themes located in the themes directory
/themes
The full file path to the current theme directory
/home/www/html/example.com/wp-content/themes/twentytwenty
the full file path to the current theme directory
/home/www/html/example.com/wp-content/themes/twentytwenty

Reference: Get Theme Directory In WordPress – Paulund

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Get file content

PHP
echo `cat ./wp-config.php`;

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Estimate time to load page

PHP
$start = time();
// put a long operation in here
sleep(2);
$diff = time() - $start;
print "This page needed $diff seconds to load :-)";

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Check file size

PHP
$filename = 'EXAMPLE/EXAMPLE.JPG';
echo $filename . ': ' . filesize($filename) . ' bytes';

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Check free space on your server

Very useful snippet to check the free space on your server

PHP
$bytes = disk_free_space(".");
$si_prefix = array( 'B', 'KB', 'MB', 'GB', 'TB', 'EB', 'ZB', 'YB' );
$base = 1024;
$class = min((int)log($bytes , $base) , count($si_prefix) - 1);

echo $bytes;
echo sprintf('%1.2f' , $bytes / pow($base,$class)) . ' ' . $si_prefix[$class];

Example response:

138288971776
128.79 GB

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Check file readability

PHP
$filename = 'FILENAME.EXTENSION';

if (is_readable($filename)) {
  echo 'The file is readable';
} else {
  echo 'The file is not readable';
}

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Get the URL of the WP upload directory

PHP
echo wp_get_upload_dir()['baseurl'];

Example response:

https://example.com/wp-content/uploads

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Rename files with garbled filename

The command ls -i shows the inode number of files

PHP
echo `ls -i ./filepath`;

The command find -inum returns the filepath of a specific inode in the file system

PHP
echo `find ./filepath -inum 55340444  `;

With the parameter and the placeholder -exec {}, the command apply the second part to rename the specific inode file

PHP
echo `find ./filepath -inum 55340444 -exec mv {} newfilepath \;`;

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Get database size

PHP
$link = mysql_connect('host', 'username', 'password');

$db_name = "your database name here";
$tables = array();

mysql_select_db($db_name, $link);
$result = mysql_query("SHOW TABLE STATUS");

while($row = mysql_fetch_array($result)) {
  /* We return the size in Kilobytes */
  $total_size = ($row[ "Data_length" ] +
  $row[ "Index_length" ]) / 1024;
  $tables[$row['Name']] = sprintf("%.2f", $total_size);
}

print_r($tables);

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Get database stats

PHP
$link = mysql_connect('HOST', 'USERNAME', 'PASSWORD');
$status = explode(' ', mysql_stat($link));
print_r($status);

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