• strlen() = Returns the amount of characters in a string in a numbe
• strpos() = returns you the character number of the previous character before the first mention of the specific word or character you wanted to know the position of
• strrpos = returns you the character number of the previous character before the last mention of the specific word or character you wanted to know the position of
• strstr() = returns the string inside of a string you specifically asked for
• substr() = returns the rest of the string after the character number you gave. you can also add how long you want it to go on for by adding a second number which dictates the length of the returned string
• str_replace() = returns the string where you replaced a specific part of the string (that is inside of the string, if not it simply gives back the unchanged string) with the part you gave up
• substr_replace() = returns the string where you replaced a specific length of the string with the part you gave up
• strtolower() = returns the string into full lowercase
• strtoupper() = returns the string into full uppercase
• ucfirst() = returns the string with the first character being uppercase
• ucwords() = returns the string with the first character of each word being uppercase