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Browse other questions tagged php error-handling syntax-error or ask your own question. Is there any further parsing functions which might better pinpoint possible errors/issues? Security Patch SUPEE-8788 - Possible Problems? https://wordpress.org/plugins/options-inspector/changelog/ Reply Leave a Reply Cancel reply Call Me To Grow Your WordPress Business WP Core Contributions [36085] [35568] [35114] [34091] [33597] [32905] [32783] for #27754 [31730] [31628] [31020] View

I want the site admin to have the ability to add his own php code, instead of editing the application files (and loosing his changes when he updates the app). –Alex Your message has been sent to W3Schools. Here is a sample code.

$clazz = "class SomeClass { var \$value = 'somevalue'; function show() { echo get_class(\$this);}}";

eval only returns FALSE if there is a parsing error. But we live in a 'freelance' world where anybody who can 'cut-and-paste' is a programmer working for the cheapest bidder (aka outsourcing). up down 2 Ipseno at yahoo dot com ¶8 I'd like not to pass through the path of sandbox or execution modules, so I've ended using eval. A return statement will immediately terminate the evaluation of the code.

It is notpossible to catch a parse error in eval() using set_error_handler().Note: In case of a fatal error in the evaluated code, the whole scriptexits."So, no. Instead use this: getMessage()."\n"; } share|improve this answer answered Aug 3 at 13:39 Yonel 1,604324 add a When must I use #!/bin/bash and when #!/bin/sh? Since you are using "executing" unknown code and really don't know if the code has any syntax errors, or and other errors.

but I'm stuck in handling the parse error. Deutsche Bahn - Quer-durchs-Land-Ticket and ICE If Dumbledore is the most powerful wizard (allegedly), why would he work at a glorified boarding school? Note: In case of a fatal error in the evaluated code, the whole script exits. " So, no. Join them; it only takes a minute: Sign up how to handle parse error for eval function in php up vote 0 down vote favorite I'm trying to use the eval

I don't know whether it works, though. –Oliver Charlesworth Apr 10 '12 at 8:41 add a comment| up vote 0 down vote From manual As of PHP 7, if there is Appease Your Google Overlords: Draw the "G" Logo Project going on longer than expected - how to bring it up to client? it's a modern post apocalyptic magical dystopia with Unicorns and Gryphons New tech, old clothes more hot questions question feed lang-php about us tour help blog chat data legal privacy policy Unless there is some other way to verify that a bit of php code is syntactically valid during script execution?

Keep in mind that you're asking PHP to try to execute code that it can't even parse to start with... If there is a parse error in the evaluated code, eval() returns FALSE and execution of the following code continues normally. Email check failed, please try again Sorry, your blog cannot share posts by email. ×Want to learn more about WordPress?I've been coaching and consulting WordPress businesses for a few years now, Take the following example script:

function ReturnArray()
return array(
"foo"=>1, "bar"=>2);


Email Address WordPress Hangouts Playlist for our WordPress Hangouts DevWP Mario Peshev Founder and WordPress architect at DevriX Send to Email Address Your Name Your Email Address Cancel Post was not The string must be valid PHP code and must end with semicolon. You can do this by doing something like: $code .= 'return TRUE;'; if ( FALSE === eval($code) ) { // Error. // ... So the best call I found is using this trick.

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed My bad english explanation with a patch can be found at http://bugs.php.net/bug.php?id=17731 Try it out and report any problems it can cause. That there is always a better way to do it. array($code[1], $code[2]) : array('unexpected $end' .

Why would a password requirement prohibit a number in the last character? The problem Reading the PHP manual on eval... Only one note: If there are heavy parse errors in the code, token_get_all can output errors by itself, e.g. The PHP eval() procedure will return FALSE if there us an error.

eval() returns NULL unless return is called in the evaluated code, in which case the value passed to return is returned. Functions Change language: English Brazilian Portuguese Chinese (Simplified) French German Japanese Korean Romanian Russian Spanish Turkish Other Edit Report a Bug eval (PHP 4, PHP 5, PHP 7)eval — Evaluate a So calling this before running your eval and testing for true will prevent the ugly errors on the page load. Near Earth vs Newtonian gravitational potential How do I help minimize interruptions during group meetings as a student?

Then the value passed to return is returned. It would just stop execution of your script. –DUzun May 23 at 7:18 add a comment| up vote 2 down vote You can also try something like this: $filePath = '/tmp/tmp_eval'.mt_rand(); Chris. http://cdbaby.com/browse/from/lynch Yeah, I get a buck.

It slows down code, makes it harder to maintain and it created security risks. If you have carefully verified that there is no other option than to use this construct, pay special attention not to pass any user provided data into it without properly validating I did pretty granular input validation with regular expressions and known troubleish test cases. I have owned technology and IT businesses since 1989.

eval is NO MORE dangerous than a 'user' having access to root deleting the partition with fdisk (or any other command/statement/function).

New tech, old clothes more hot questions question feed lang-php about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Sokolewicz at Aug 20, 2007 at 2:12 pm ⇧ Maarten Balliauw wrote:Here's the thing: I'm trying to do some dynamic code compilation withinPHP using eval(). Not gonna happen.--Some people have a "gift" link here.Know what I want?I want you to buy a CD from some indie artist.http://cdbaby.com/browse/from/lynchYeah, I get a buck. Sokolewicz (1) Stut (1) Content Home Groups & Organizations People Users Badges Support Welcome FAQ Contact Us Translate site design / logo © 2016 Grokbase

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Apart from that the passed code must be valid PHP. Canada · BC · Vancouver The Proper Way to Use PHP's eval() by Charles Iliya Krempeaux, published on Tue Jun 14th, 2005 Many people say it is bad You should be making an effort to check for this. In fact, it returns null only if there is absolutely no error in all the script, even outside the eval'd string.