How Can Get Item id from item name

I want to get the id of the item from the item name. For example, the sign says Stone. I want to get the id of this item by pulling this text from the sign. i make SignShop. how can I do?

 

You can use the ItemFactory static function FromString() to get the Item's Id.
Example accepted formats:

• diamond_pickaxe:5
• minecraft:string
• 351:4 (lapis lazuli ID:meta)

If multiple item instances are to be created, their identifiers must be comma-separated, for example: diamond_pickaxe,wooden_shovel:18,iron_ingot

Example:

PHP:

pocketmine\item\ItemFactory::fromString("minecraft:diamond_pickaxe")->getId() // Get's the item then get's the item's id.

 

but this can cause some problems. I don't want it to say "diamond_pickaxe" on the sign. I want it to say "Diamond Pickaxe"
so
Line0 - [SignShop]
Line1 - Diamond Pickaxe
Line2 - 1 Piece
Line3 - 100 Dolars
I want it that way

 

You can use str_replace() to change the space to underscore, then lowercase the string