These four functions are character manipulation functions, mainly to determine the number of occurrences of characters, the need for friends can refer to.
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STRSTR: Find return value from left to right: string
STRRCHR: Right-to-left lookup return value: string
Strpos: Find return value from left to right: integer, if the found string does not exist, returns an empty
Strrpos: Right-to-left lookup return value: integer
$STR = "High-flying birds, sea-wide diving";//strstr: Find strrchr from left to right
echo "Raw string:". $str. "
";
echo "Search with strstr function", "return Result:". Strstr ($str, ","). "
";
echo "uses the STRSTR function to search for" bird Fly "return results:". STRSTR ($str, "Bird Fly"). "
"; $str 1= "I have a great dream.";
echo "Raw string:". $str 1. "
";
echo "Searches for the return result of" E "with the STRRCHR function:". STRRCHR ($str 1, "E"). "
";
echo "Searches for the return result of the EA using the STRRCHR function:". STRRCHR ($str 1, "VE"). "
"; $str 2= "I am an abstract about abroad.";
echo "Original string is:" $str 2. "
";
The first occurrence of echo "AB in the string is:". Strpos ($str 2, "AB"). "
";
The first occurrence of echo "AB in the string is:". Strpos ($str 2, "AM"). "
";
The first occurrence of echo "ABCD in a string is:". Strpos ($str 2, "Aman"). "
"; $str 3= "I am is Wang Hui.";
echo "Original string is:" $str 3. "
";
The last occurrence of echo "I in the string is:". Strrpos ($str 3, "I"). "
";
The last occurrence of echo "an in the string is:". Strrpos ($str 3, "an"). "
";
The last occurrence of echo "I in the string is:". Strrpos ($str 3, "I"); ?> |
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