Combine an array into a string with semicolon separator 
$array = 'The','quick','brown','fox','jumps','over','the','lazy','dog.'
$array -join(';')
Details
Uses a join to combine the strings

Example
PS C:\> $array = 'The','quick','brown','fox','jumps','over','the','lazy','dog.'
>> $array -join(';')

The;quick;brown;fox;jumps;over;the;lazy;dog.
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Combine an array into a string with space separator 
$array = 'The','quick','brown','fox','jumps','over','the','lazy','dog.'
$array -join(' ')
Details
Uses a join to combine the strings

Example
PS C:\> $array = 'The','quick','brown','fox','jumps','over','the','lazy','dog.'
>> $array -join(' ')

The quick brown fox jumps over the lazy dog.
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