为什么这会发生在substr空间[重复]

i wondering why substr function count space Example:

$text= 'Hello World';
echo substr($text,0,6);

the output will be

Hello

but i want to be

Hello w

Thanks for any help

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The substr() function counts from the first character as 0 and this includes the space as well.

This should give your desired output:

$text= 'Hello World';
echo substr($text,0,7);

A space character is counted just like any other character. To get the output you want you need to use:

$text= 'Hello World';
echo substr($text,0,7);