PHP provides various string functions to access and manipulate strings. Here Some of the commonly used PHP String Functions are

• strlen(): Returns the length of a string.
• substr(): Returns a part of a string.
• str_replace(): Replaces a substring with another substring in a string.
• strpos(): Returns the position of the first occurrence of a substring in a string.
• strtoupper(): Converts a string to uppercase.
• strtolower(): Converts a string to lowercase.

• addcslashes(): It is used to return a string with backslashes.
• addslashes(): It is used to return a string with backslashes.
• bin2hex(): It is used to converts a string of ASCII characters to hexadecimal values.
• chop() It removes whitespace or other characters from the right end of a string
• chr(): It is used to return a character from a specified ASCII value.
• trim(): Removes whitespace or other characters from the beginning and end of a string.
• explode(): Splits a string into an array based on a specified delimiter.
• substr_compare(): Compares two strings from an offset up to the length of characters. (Binary safe comparison)
• substr_count(): Count the number of times occurrence of a substring
• trim(): Remove whitespace or other characters from the beginning and end of the string.

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