PHP - Describe functions STRSTR() and STRISTR.

Describe functions STRSTR() and STRISTR.

Both the functions are used to find the first occurrence of a string. Parameters includes: input String, string whose occurrence needs to be found, TRUE or FALSE (If TRUE, the functions return the string before the first occurrence.

STRISTR is similar to STRSTR. However, it is case-insensitive.

Example:
strstr ($input_string, string)
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