Site DOwn after 4.9.2 Upgrade

Resolved mjb566
(@mjb566)

6 years, 3 months ago

Hi,
4.9.2 auto-installed last night and broke my site. I have managed to get it working by replacing wp-db.php with the version from 4.9.1

If I re-install wp-db.php from 4.9.2 the site breaks with the error message Warning: preg_match(): Compilation failed: unrecognized character after (?< at offset 4 in /web1/user/website/wp-includes/wp-db.php on line 1657

The line referred (1657) to matches line 1664 in ver 4.9.1 but otherwise is the same in both versions.

Any ideas why the wp-db.php file from 4.9.2 is breaking the site whilst 4.9.1 doesn’t?
Thanks

The page I need help with: [log in to see the link]

Viewing 15 replies - 16 through 30 (of 34 total)

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Thread Starter mjb566
(@mjb566)

6 years, 3 months ago

@petergo1

Rajan Vi has been in touch, he will see if he can help shortly.

petergo1
(@petergo1)

6 years, 3 months ago

mjb566,

It looks from your website as if you solved your problem?
Peter

Thread Starter mjb566
(@mjb566)

6 years, 3 months ago

@petergo1

Hi Peter,
Sadly not. I have put back version 4.9.1 of the wp-db.php file
Still working on the problem, if I find a solution I will let you know 🙂

ichigo-branding
(@ichigo-branding)

6 years, 3 months ago

I got some problem

wp-includes/wp-db.php on line 1657

Anyone solved yet?

Rajan Vijayan
(@rajanit2000)

6 years, 3 months ago

Hi @ichigo-branding.,

Just add @ symbol at the front of the line in wp-db.php

$result = @preg_match( $pattern, $host, $matches );

Thanks
Rajan V

ichigo-branding
(@ichigo-branding)

6 years, 3 months ago

Thank you.

OK. I will try.

I never change wp-db.php.

If I missed spell, anything happen?

Like shut down site?

Thread Starter mjb566
(@mjb566)

6 years, 3 months ago

@ichigo-branding
@petergo1
@rajanit2000

Just a quick message to confirm that Rajan’s fix has restored my website perfectly! Thank you to Rajan for patiently waiting all day for me to sort out ftp access. Your help with this problem has been sensational and I am very grateful to you for your kind help.

ichigo-branding
(@ichigo-branding)

6 years, 3 months ago

@mjb566
@rajanit2000

So just add @ ?

I’ve never change wp-db.php.

I got back up wp-db.php.

And add @.

If something happend. Change to backup wp-db.php.

Is it collect?

Rajan Vijayan
(@rajanit2000)

6 years, 3 months ago

@ichigo-branding

Yes just try that

ichigo-branding
(@ichigo-branding)

6 years, 3 months ago

@rajanit2000

It’s work!

You really appreciate

Thank you for your help and kindness.

Thread Starter mjb566
(@mjb566)

6 years, 3 months ago

@ichigo-branding

Full line is –
$result = @preg_match( $pattern, $host, $matches );

ichigo-branding
(@ichigo-branding)

6 years, 3 months ago

@mjb566

Thanks!

It’s work now.

It is kind of you to help me

petergo1
(@petergo1)

6 years, 3 months ago

Hi,

Not so IT-savvy as the others here. Where do I find this line please?

Peter

Thread Starter mjb566
(@mjb566)

6 years, 3 months ago

@petergo1

Can you open files on the server? if yes, then look for the folder names wp-includes.

Open wp-includes and near the bottom of the files listed, you will see wp-db.php
Open wp-db.php and around line 1657 you will see the line of code to amend.

If you don’t have a file editor, try something free such as Notepad++ as it lists line numbers.

HTH,
Mickey

petergo1
(@petergo1)

6 years, 3 months ago

Thanks Mickey. Think it would still be a bit risky for me to try it, but one of the chaps in our choir thinks he can do so.

Much obliged to all for the help and advice

Peter