Phpstrstr () strrchr () strpos () strrpos () function. These four functions are character operation functions, mainly used to determine the number of occurrences of a character. For more information, see. The code is as follows: Copy the code? Phpstrstr: Returns from left to right. these four functions are character operation functions, mainly used to determine the number of occurrences of characters. if you need them, refer to them.
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// Strstr: returns value from left to right: string
// Strrchr: returns a string from right to left.
// Strpos: return value from left to right: Integer. if the searched string does not exist, null is returned.
// Strrpos: return value from right to left: integer
$ Str = "sky high, birds fly, sea wide, fish jump"; // strstr: Search from left to right strrchr: Search from right to left
Echo "original string:". $ str ."
";
Echo "returns the result of searching", "using the strstr function:". strstr ($ str ,",")."
";
Echo "returns the result of searching" bird fly "using the strstr function:". strstr ($ str, "Bird fly ")."
"; $ Str1 = "I have a great dream .";
Echo "original string:". $ str1 ."
";
Echo "returns the result of searching" e "using the strrchr function:". strrchr ($ str1, "e ")."
";
Echo "use the strrchr function to search for the returned result of" ea ":". strrchr ($ str1, "ve ")."
"; $ Str2 = "I am an abstract about abroad .";
Echo "original string:". $ str2 ."
";
Echo "the first occurrence position of AB in the string is:". strpos ($ str2, "AB ")."
";
Echo "the first occurrence position of AB in the string is:". strpos ($ str2, "am ")."
";
Echo "the location where abcd first appears in the string is:". strpos ($ str2, "aman ")."
"; $ Str3 = "I am is wang hui .";
Echo "original string:". $ str3 ."
";
Echo "the last occurrence position of I in the string is:". strrpos ($ str3, "I ")."
";
Echo "the last appearance position of an in the string is:". strrpos ($ str3, "")."
";
Echo "the last occurrence of I in the string is:". strrpos ($ str3, "I "); ?> |
Bytes. The code is as follows? Php // strstr: Search from left to right and return...
