Simple SEO

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wp_redirect() found. Using wp_safe_redirect(), along with the "allowed_redirect_hosts" filter if needed, can help avoid any chances of malicious redirects within code. It is also important to remember to call exit() after a redirect so that no other unwanted code is executed.

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Use of a direct database call is discouraged.

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Direct database call without caching detected. Consider using wp_cache_get() / wp_cache_set() or wp_cache_delete().

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unlink() is discouraged. Use wp_delete_file() to delete a file.

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Scripts must be registered/enqueued via wp_enqueue_script()

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A function call to __() with texts containing placeholders was found, but was not accompanied by a "translators:" comment on the line above to clarify the meaning of the placeholders.

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Unescaped parameter $qs used in $wpdb->get_results()\n$qs assigned unsafely at line 77.

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Use placeholders and $wpdb->prepare(); found $qs

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date() is affected by runtime timezone changes which can cause date/time to be incorrectly displayed. Use gmdate() instead.

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Global variables defined by a theme/plugin should start with the theme/plugin prefix. Found: "$SimpleSEO".

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Detected usage of a possibly undefined superglobal array index: $_POST['post_type']. Check that the array index exists before using it.

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File operations should use WP_Filesystem methods instead of direct PHP filesystem calls. Found: fclose().

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File operations should use WP_Filesystem methods instead of direct PHP filesystem calls. Found: fopen().

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File operations should use WP_Filesystem methods instead of direct PHP filesystem calls. Found: fwrite().

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Plugin name header in your readme is missing or invalid. Please update your readme with a valid plugin name header. Eg: "=== Example Name ==="