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Powershell-Scripts/Functions Scripts/function to compare version numbers.ps1

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$ver1 = "115.0.5790.99"
$ver2 = "115.0.5790.171"
Function verCompare($ver1, $ver2) {
# returns whether ver1 is Less, Greater, or Equal to ver2
$ver1Array = $ver1.Split(".")
$ver2Array = $ver2.Split(".")
# Decide which array has the least amount of subversions and we'll only compare the least amount
If ($ver1Array.count -ge $ver2Array.count) { $count = $ver1Array.count }
Else { $count = $ver2Array.count }
# Loop through each sub version and compare them.
# Once I hit a Greater or Less than I change the count to break
# Out of the for loop because there is no need to compare further
For ($i = 0; $i -lt $count; $i++) {
Switch ( $ver1Array[$i].CompareTo($ver2Array[$i]) ) {
-1 { $compare = "$ver1 Less than $ver2"; $i = $count + 1 }
0 { $compare = "$ver1 Equal to $ver2" }
1 { $compare = "$ver1 Greater than $ver2"; $i = $count + 1 }
}
}
return $compare
}
verCompare $ver1 $ver2