php preg replace returns null

More information is available here: dwn.220.v.ua or on dwn.220.v.ua...

More information is available here: dwn.220.v.ua or on dwn.220.v.ua

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preg_replace accepts a regular expression as it's first arguments. Nei...

preg_replace accepts a regular expression as it's first arguments. Neither " " nor "_" are valid regular expressions. In this case you can use.

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See the preg_replace reference: If matches are found, the new subject will ...

See the preg_replace reference: If matches are found, the new subject will be returned, otherwise subject will be returned unchanged or NULL.

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Escape the?. Because? is a special char in regex (acts like an optional qua...

Escape the?. Because? is a special char in regex (acts like an optional quantifier or non-greedy quantifier). You need to escape that in-order.

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preg_replace() returns an array if the subject parameter is an array, or a ...

preg_replace() returns an array if the subject parameter is an array, or a text is not UTF and you have this modifier, you'll get a null result.

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You forget to add delimiters. preg_replace('~\s+~', '',...

You forget to add delimiters. preg_replace('~\s+~', '', "test test");. And also it's better to use \s+ instead of [\s]+ in your pattern.

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As I understand, PHP doesn't have a global flag, as the function you u...

As I understand, PHP doesn't have a global flag, as the function you use decides if the regex is global or not. Credit for this answer to Mario in.

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preg_replace — Perform a regular expression search and replace .. preg_repl...

preg_replace — Perform a regular expression search and replace .. preg_replace (and other preg-functions) return null instead of a string when encountering.

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All it does is return NULL, something that the preg family of functions typ...

All it does is return NULL, something that the preg family of functions typically never does. There were a lot of entries on the dwn.220.v.ua site.

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preg_replace returns NULL: PHP doesn't do Unicode natively, so you can...

preg_replace returns NULL: PHP doesn't do Unicode natively, so you can't really post Unicode chars into a PHP string and expect it to work.

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php $in = 'Somewhere, something incredible is waiting to be replaced w...

php $in = 'Somewhere, something incredible is waiting to be replaced with the last line of output (which is what system() returns). Safety is an illusion, however, because of the way preg_replace() handles null bytes.

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preg_replace returns NULL for certain pattern and input # /lib/CssCrush/dwn...

preg_replace returns NULL for certain pattern and input # /lib/CssCrush/dwn.220.v.ua#L75 which is why CSS-Crush fails on HHVM.

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UTF-8 preg_replace returning null - posted in Regex Help: I'm working ...

UTF-8 preg_replace returning null - posted in Regex Help: I'm working on a function to Anglicise a string. Here's part of it in a testing assembly.

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Both preg_replace and preg_replace_callback return an empty string in this ...

Both preg_replace and preg_replace_callback return an empty string in this case, even when. Edit bug report at dwn.220.v.ua?id=&edit=1

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PHP Bug Type: *Regular Expressions Bug description: I found a situation whe...

PHP Bug Type: *Regular Expressions Bug description: I found a situation where preg_replace returns NULL instead of the expected string.

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