如何在字符串末尾添加空格？

I searched online and found the str_pad() function but this is not what I need. I need to automatically add a space at the end of a string.

The string value returned can be my default value or a custom value supplied by an extending developer. If the developer supplies extra characters, which they can, then the str_pad() approach won't always work.

Is there a simple function for this to ALWAYS add one space to the end of a string? Like a trim() but works the opposite?

Here is what I am doing.

str_pad($this->filter('custom_hook_name', FALSE, 'column span-12'), 15);

My default is 'column span-12'

However the developer might return their custom classes as well so the return string value could look something like...

'dev-brand-column span-12'

'dev-brand-col col-12'

// etc...

I need to add a space as the end of the string regardless of the string length.

How can I achieve that? I find nothing that works the opposite of trim() like.

Use rtrim to first remove all whitespace at the end of the string that might be there, then add one space yourself:

$str = rtrim($str) . " ";

I think that sprintf() can help you...

For example :

$string = "Bond";
printf("%-10s",    $string);

Will return :

Bond

With 6 spaces at the end of the string.

Hope it helps.