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    php_check_syntax

    (PHP 5 < 5.0.5)

    php_check_syntax — Vérifie la syntaxe PHP (et exécute) d'un fichier spécifique

    Description

    php_check_syntax ( string $filename [, string &$error_message ] ) : bool

    Effectue une vérification de la syntaxe du fichier filename pour y trouver des erreurs de script.

    Ceci est similaire à utiliser la commande php -l depuis la ligne de commande mise à part que php_check_syntax() exécutera (mais n'affichera rien) le fichier filename vérifié.

    Par exemple, si une fonction est définie dans filename, cette fonction sera disponible pour le fichier qui exécute php_check_syntax(), mais l'affichage depuis filename sera supprimée.

    Note:

    Pour des raisons techniques, cette fonction est obsolète et supprimée de PHP. Utilisez à la place php -l somefile.php depuis la ligne de commande.

    Liste de paramètres

    filename

    Le nom du fichier à vérifier.

    error_message

    Si le paramètre error_message est utilisé, il contiendra le message d'erreur généré par la vérification de la syntaxe. error_message est passé par référence.

    Valeurs de retour

    Retourne TRUE si la vérification a réussie, et FALSE si la vérification échoue ou si le fichier filename n'a pu être ouvert.

    Historique

    Version Description
    5.0.5 Cette fonction a été supprimée de PHP.
    5.0.3 Appel à exit() après php_check_syntax() cause une erreur de segmentation.
    5.0.1 error_message est passé par référence.

    Exemples

    php -l somefile.php

    L'exemple ci-dessus va afficher quelque chose de similaire à :

    PHP Parse error: unexpected T_STRING in /tmp/somefile.php on line 81

    Voir aussi

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    User Contributed Notes 2 notes

    up
    -7
    kevin at metalaxe dot com
    16 years ago
    I've given it some thought and rewritten my function to take full advantage of the CLI -l option (that's lower L). It requires that you enable error reporting via your own php.ini file (which you should edit the function to apply) otherwise the return result is a worthless "Error parsing".

    Anyway, I hope this is useful for someone. I'm sure it could use improvement, so use at your own risk. Demo here:
    http://kevinpeno.com/projects/php_syntax_check.php

    <?php
    /**
    *    Check Syntax
    *    Performs a Syntax check within a php script, without killing the parser (hopefully)
    *    Do not use this with PHP 5 <= PHP 5.0.4, or rename this function.
    *
    *    @params    string    PHP to be evaluated
    *    @return    array    Parse error info or true for success
    **/
    function php_check_syntax( $php, $isFile=false )
    {
            # Get the string tokens
            $tokens = token_get_all( '<?php '.trim( $php  ));
       
            # Drop our manually entered opening tag
            array_shift( $tokens );
            token_fix( $tokens );

            # Check to see how we need to proceed
        # prepare the string for parsing
            if( isset( $tokens[0][0] ) && $tokens[0][0] === T_OPEN_TAG )
               $evalStr = $php;
        else
                $evalStr = "<?php\n{$php}?>";

        if(     $isFile OR ( $tf = tempnam( NULL, 'parse-' ) AND file_put_contents( $tf, $php ) !== FALSE ) AND $tf = $php )
        {
                # Prevent output
                ob_start();
                system( 'C:\inetpub\PHP\5.2.6\php -c "'.dirname(__FILE__).'/php.ini" -l < '.$php, $ret );
                $output = ob_get_clean();

            if(     $ret !== 0 )
            {
                    # Parse error to report?
                    if( (bool)preg_match( '/Parse error:\s*syntax error,(.+?)\s+in\s+.+?\s*line\s+(\d+)/', $output, $match ) )
                {
                    return array(
                            'line'    =>    (int)$match[2],
                            'msg'    =>    $match[1]
                    );
                }
            }
            return     true;
        }
        return     false;
    }

    //fixes related bugs: 29761, 34782 => token_get_all returns <?php NOT as T_OPEN_TAG
    function token_fix( &$tokens ) {
        if (!    is_array($tokens) || (count($tokens)<2)) {
            return;
        }
           //return of no fixing needed
            if (is_array($tokens[0]) && (($tokens[0][0]==T_OPEN_TAG) || ($tokens[0][0]==T_OPEN_TAG_WITH_ECHO)) ) {
            return;
        }
            //continue
            $p1 = (is_array($tokens[0])?$tokens[0][1]:$tokens[0]);
            $p2 = (is_array($tokens[1])?$tokens[1][1]:$tokens[1]);
            $p3 = '';

        if ((    $p1.$p2 == '<?') || ($p1.$p2 == '<%')) {
                $type = ($p2=='?')?T_OPEN_TAG:T_OPEN_TAG_WITH_ECHO;
                $del = 2;
                //update token type for 3rd part?
                if (count($tokens)>2) {
                    $p3 = is_array($tokens[2])?$tokens[2][1]:$tokens[2];
                    $del = (($p3=='php') || ($p3=='='))?3:2;
                    $type = ($p3=='=')?T_OPEN_TAG_WITH_ECHO:$type;
            }
                //rebuild erroneous token
                $temp = array($type, $p1.$p2.$p3);
            if (    version_compare(phpversion(), '5.2.2', '<' )===false)
                    $temp[] = isset($tokens[0][2])?$tokens[0][2]:'unknown';

                //rebuild
                $tokens[1] = '';
            if (    $del==3) $tokens[2]='';
                $tokens[0] = $temp;
        }
        return;
    }
    ?>
    up
    -7
    matt dot nospam at pryor dot org dot uk
    16 years ago
    While developing an app where I have to include PHP files written by a user, I came across the following problem:

    I used "php -l somefile.php" to check the syntax of the file I was about to include and if it passed, I would include it - so far so good. But in some test cases, the file I was including would have other includes/requires inside it. If one of these was invalid, then I would still get the parse error that I was trying to avoid.

    I got round it using this:

    <?php
            function CheckSyntax($fileName, $checkIncludes = true)
        {
                // If it is not a file or we can't read it throw an exception
                if(!is_file($fileName) || !is_readable($fileName))
                throw new     Exception("Cannot read file ".$fileName);
           
                // Sort out the formatting of the filename
                $fileName = realpath($fileName);
           
                // Get the shell output from the syntax check command
                $output = shell_exec('php -l "'.$fileName.'"');
           
                // Try to find the parse error text and chop it off
                $syntaxError = preg_replace("/Errors parsing.*$/", "", $output, -1, $count);
           
                // If the error text above was matched, throw an exception containing the syntax error
                if($count > 0)
                throw new     Exception(trim($syntaxError));
           
                // If we are going to check the files includes
                if($checkIncludes)
            {
                foreach(    GetIncludes($fileName) as $include)
                {
                        // Check the syntax for each include
                        CheckSyntax($include);
                }
            }
        }
       
        function     GetIncludes($fileName)
        {
                // NOTE that any file coming into this function has already passed the syntax check, so
            // we can assume things like proper line terminations
               
                $includes = array();
                // Get the directory name of the file so we can prepend it to relative paths
                $dir = dirname($fileName);
           
                // Split the contents of $fileName about requires and includes
            // We need to slice off the first element since that is the text up to the first include/require
                $requireSplit = array_slice(preg_split('/require|include/i', file_get_contents($fileName)), 1);
           
                // For each match
                foreach($requireSplit as $string)
            {
                    // Substring up to the end of the first line, i.e. the line that the require is on
                    $string = substr($string, 0, strpos($string, ";"));
               
                    // If the line contains a reference to a variable, then we cannot analyse it
                // so skip this iteration
                    if(strpos($string, "$") !== false)
                    continue;
               
                    // Split the string about single and double quotes
                    $quoteSplit = preg_split('/[\'"]/', $string);
               
                    // The value of the include is the second element of the array
                // Putting this in an if statement enforces the presence of '' or "" somewhere in the include
                // includes with any kind of run-time variable in have been excluded earlier
                // this just leaves includes with constants in, which we can't do much about
                    if($include = $quoteSplit[1])
                {
                        // If the path is not absolute, add the dir and separator
                    // Then call realpath to chop out extra separators
                        if(strpos($include, ':') === FALSE)
                            $include = realpath($dir.DIRECTORY_SEPARATOR.$include);
               
                        array_push($includes, $include);
                }
            }
           
            return     $includes;
        }
    ?>

    This checks as many of the includes inside the file as it possibly can without executing anything.
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