PHP Function Strripos - Find the Position of Last Occurrence of a String Inside Another String

The php function strripos is an in-build function which is used to find the position of last occurrence of a string inside another string. It returns a numeric value which indicates the index of the search string. It is case-insensitive and binary-safe.

The strripos() function is similar to the strpos() function, except that it is case-insensitive and returns a numeric value which indicates the position of the last occurrence of the search string. In addition, this function also accepts an additional parameter, $start, which defines the position from where the search should begin.

In order to use the strripos() function, you need to pass in two parameters - the first is the string upon which the search needs to be done, and the second is the string for which the search needs to be made. The function will then check if the searched string is available in the given string, and if it is not, it will return the Boolean value FALSE.

Most php functions require a single parameter in order to function, but the strripos() function requires two. The required parameters are as follows:

haystack = ''

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strripos example

        if ($protectIdentifiers === false && $prefixSingle === false && $this->swapPre === '') {
            /** @psalm-suppress NoValue I don't know why ERROR. */
            return $item;
        }

        // Convert tabs or multiple spaces into single spaces         /** @psalm-suppress NoValue I don't know why ERROR. */
        $item = preg_replace('/\s+/', ' ', trim($item));

        // If the item has an alias declaration we remove it and set it aside.         // Note: strripos() is used in order to support spaces in table names         if ($offset = strripos($item, ' AS ')) {
            $alias = ($protectIdentifiers) ? substr($item, $offset, 4) . $this->escapeIdentifiers(substr($item, $offset + 4)) : substr($item, $offset);
            $item  = substr($item, 0, $offset);
        } elseif ($offset = strrpos($item, ' ')) {
            $alias = ($protectIdentifiers) ? ' ' . $this->escapeIdentifiers(substr($item, $offset + 1)) : substr($item, $offset);
            $item  = substr($item, 0, $offset);
        } else {
            $alias = '';
        }

        // Break the string apart if it contains periods, then insert the table prefix         // in the correct location, assuming the period doesn't indicate that we're dealing

        if ($needle instanceof AbstractString) {
            $needle = $needle->string;
        } elseif (!\is_string($needle)) {
            return parent::indexOfLast($needle, $offset);
        }

        if ('' === $needle) {
            return null;
        }

        $i = $this->ignoreCase ? strripos($this->string, $needle, $offset) : strrpos($this->string, $needle, $offset);

        return false === $i ? null : $i;
    }

    public function isUtf8(): bool
    {
        return '' === $this->string || preg_match('//u', $this->string);
    }

    public function join(array $strings, string $lastGlue = null): static
    {
        

    public static function standardiseFile($file)
    {
        $fileName = ltrim($file, '\\');
        $file      = '';
        $namespace = '';
        if ($lastNsPos = strripos($fileName, '\\')) {
            $namespace = substr($fileName, 0, $lastNsPos);
            $fileName = substr($fileName, $lastNsPos + 1);
            $file      = str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
        }
        $file .= str_replace('_', DIRECTORY_SEPARATOR, $fileName) . '.php';
        return $file;
    }
}

function get_home_path() {
    $home    = set_url_scheme( get_option( 'home' ), 'http' );
    $siteurl = set_url_scheme( get_option( 'siteurl' ), 'http' );

    if ( ! empty( $home ) && 0 !== strcasecmp( $home, $siteurl ) ) {
        $wp_path_rel_to_home = str_ireplace( $home, '', $siteurl ); /* $siteurl - $home */
        $pos                 = strripos( str_replace( '\\', '/', $_SERVER['SCRIPT_FILENAME'] ), trailingslashit( $wp_path_rel_to_home ) );
        $home_path           = substr( $_SERVER['SCRIPT_FILENAME'], 0, $pos );
        $home_path           = trailingslashit( $home_path );
    } else {
        $home_path = ABSPATH;
    }

    return str_replace( '\\', '/', $home_path );
}

/** * Returns a listing of all files in the specified folder and all subdirectories up to 100 levels deep. * * The depth of the recursiveness can be controlled by the $levels param. * * @since 2.6.0 * @since 4.9.0 Added the `$exclusions` parameter. * @since 6.3.0 Added the `$include_hidden` parameter. * * @param string $folder Optional. Full path to folder. Default empty. * @param int $levels Optional. Levels of folders to follow, Default 100 (PHP Loop limit). * @param string[] $exclusions Optional. List of folders and files to skip. * @param bool $include_hidden Optional. Whether to include details of hidden ("." prefixed) files. * Default false. * @return string[]|false Array of files on success, false on failure. */

        if ($needle instanceof AbstractString) {
            $needle = $needle->string;
        } elseif (!\is_string($needle)) {
            return parent::indexOfLast($needle, $offset);
        }

        if ('' === $needle) {
            return null;
        }

        $i = $this->ignoreCase ? strripos($this->string, $needle, $offset) : strrpos($this->string, $needle, $offset);

        return false === $i ? null : $i;
    }

    public function isUtf8(): bool
    {
        return '' === $this->string || preg_match('//u', $this->string);
    }

    public function join(array $strings, string $lastGlue = null): static
    {
        
// Sub-requests and programmatic calls stay in the collected profile.         if ($this->dumper || ($this->requestStack && $this->requestStack->getMainRequest() !== $request) || $request->isXmlHttpRequest() || $request->headers->has('Origin')) {
            return;
        }

        // In all other conditions that remove the web debug toolbar, dumps are written on the output.         if (!$this->requestStack
            || !$response->headers->has('X-Debug-Token')
            || $response->isRedirection()
            || ($response->headers->has('Content-Type') && !str_contains($response->headers->get('Content-Type') ?? '', 'html'))
            || 'html' !== $request->getRequestFormat()
            || false === strripos($response->getContent(), '</body>')
        ) {
            if ($response->headers->has('Content-Type') && str_contains($response->headers->get('Content-Type') ?? '', 'html')) {
                $dumper = new HtmlDumper('php://output', $this->charset);
                $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
            } else {
                $dumper = new CliDumper('php://output', $this->charset);
                $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
            }

            foreach ($this->data as $dump) {
                $this->doDump($dumper, $dump['data'], $dump['name'], $dump['file'], $dump['line'], $dump['label'] ?? '');
            }


        $this->injectToolbar($response, $request, $nonces);
    }

    /** * Injects the web debug toolbar into the given Response. */
    protected function injectToolbar(Response $response, Request $request, array $nonces): void
    {
        $content = $response->getContent();
        $pos = strripos($content, '</body>');

        if (false !== $pos) {
            $toolbar = "\n".str_replace("\n", '', $this->twig->render(
                '@WebProfiler/Profiler/toolbar_js.html.twig',
                [
                    'full_stack' => class_exists(FullStack::class),
                    'excluded_ajax_paths' => $this->excludedAjaxPaths,
                    'token' => $response->headers->get('X-Debug-Token'),
                    'request' => $request,
                    'csp_script_nonce' => $nonces['csp_script_nonce'] ?? null,
                    'csp_style_nonce' => $nonces['csp_style_nonce'] ?? null,
                ]
// Sub-requests and programmatic calls stay in the collected profile.         if ($this->dumper || ($this->requestStack && $this->requestStack->getMainRequest() !== $request) || $request->isXmlHttpRequest() || $request->headers->has('Origin')) {
            return;
        }

        // In all other conditions that remove the web debug toolbar, dumps are written on the output.         if (!$this->requestStack
            || !$response->headers->has('X-Debug-Token')
            || $response->isRedirection()
            || ($response->headers->has('Content-Type') && !str_contains($response->headers->get('Content-Type') ?? '', 'html'))
            || 'html' !== $request->getRequestFormat()
            || false === strripos($response->getContent(), '</body>')
        ) {
            if ($response->headers->has('Content-Type') && str_contains($response->headers->get('Content-Type') ?? '', 'html')) {
                $dumper = new HtmlDumper('php://output', $this->charset);
                $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
            } else {
                $dumper = new CliDumper('php://output', $this->charset);
                if (method_exists($dumper, 'setDisplayOptions')) {
                    $dumper->setDisplayOptions(['fileLinkFormat' => $this->fileLinkFormat]);
                }
            }

            
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