Length of $testString = 58
Position (first occurrence!) of 'is' in $testString = 2
$testString = This is a random string to illustrate PHP string functions
$subString = PHP
$testString = This is a random string to illustrate some string functions
$testString = THIS IS A RANDOM STRING TO ILLUSTRATE SOME STRING FUNCTIONS
$testString = this is a random string to illustrate some string functions
$testString = This Is A Random String To Illustrate Some String Functions
$words =
array(10) { [0]=> string(4) "This" [1]=> string(2) "Is" [2]=> string(1) "A" [3]=> string(6) "Random" [4]=> string(6) "String" [5]=> string(2) "To" [6]=> string(10) "Illustrate" [7]=> string(4) "Some" [8]=> string(6) "String" [9]=> string(9) "Functions" }