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This article introduces the knowledge of "what skills are commonly used in php development". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Add a new attribute to an php foreach array

I didn't notice this problem before, but today I found that when I iterated through the array through foreach, the new properties were not added to the array.

Foreach ($tags as $tag) {

$tag ["name"] = "new name"

}

/ / solution 1: use array item references

Foreach ($tags as & $tag) {

$tag ["name"] = "new name"

}

/ / solution two

Foreach ($tags as $index = > $tag) {$tags [$index] ["name"] = "new name"

}

Specify multiple delimiters when PHP splits a string

In the use of PHP Laravel to achieve the blog article multi-tag function, input tags with English commas as delimiters.

However, PHP's string splitter function explode only supports a single delimiter:

$tags = explode (",", $tags_str)

This is not compatible with Chinese commas because it is easy to mistakenly enter Chinese commas when entering Chinese labels.

So divide it in a regular way:

> $tags_str = "php, Kotlin, Android, website"

= > "php, Kotlin, Android, website"

> preg_split ("/ (, |,) /", $tags_str)

= > [

"php"

"Kotlin"

"Android"

"website"

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