what is the functionality of function strstr and stristr, PHP String Operation, PHP

Question:What is the functionality of the function strstr and stristr?

Answer Strstr(): The strstr() function returns the remainder of a string beginning with the first occurrence of a predefined string.

Stristr():The strstr() function returns the remainder of a string beginning with the first occurrence of a predefined string ignoring case-sensitivity.

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What is the functionality of the function strstr and stristr?

Question:What is the functionality of the function strstr and stristr?

Answer Strstr(): The strstr() function returns the remainder of a string beginning with the first occurrence of a predefined string.Stristr():The strstr() function returns the remainder of a string beginning with the first occurrence of a predefined string ignoring case-sensitivity.

Answer Strstr(): The strstr() function returns the remainder of a string beginning with the first occurrence of a predefined string.

Stristr():The strstr() function returns the remainder of a string beginning with the first occurrence of a predefined string ignoring case-sensitivity.