STRSTR
Find the first occurrence of a string
SYNTAX
strstr ( string $haystack , mixed $needle [, bool $before_needle = FALSE ] ) : string
PARAMETERS
haystack
The input string.
needle
If needle is not a string, it is converted to an integer and applied as the ordinal value of a character. This behavior is deprecated as of PHP 7.3.0, and relying on it is highly discouraged. Depending on the intended behavior, the needle should either be explicitly cast to string, or an explicit call to chr() should be performed.
before_needle
If TRUE, strstr() returns the part of the haystack before the first occurrence of the needle (excluding the needle).
RETURN
Returns the portion of string, or FALSE if needle is not found.
EXAMPLES
HAYSTACK NEEDLE | STRING
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HAYSTACK NEEDLE | CHR
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BEFORE_NEEDLE
CASEca