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(PHP 5)

substr_compare --  Binary safe optionally case insensitive comparison of 2 strings from an offset, up to length characters

Description

int substr_compare ( string main_str, string str, int offset [, int length [, bool case_insensitivity]] )

substr_compare() compares main_str from position offset with str up to length characters.

Returns < 0 if main_str from position offset is less than str , > 0 if it is greater than str , and 0 if they are equal. If length is equal or greater than length of main_str and length is set, substr_compare() prints warning and returns FALSE .

If case_insensitivity is TRUE , comparison is case insensitive.

Example 1. A substr_compare() example

<?php
echo substr_compare("abcde", "bc", 1, 2); // 0
echo substr_compare("abcde", "bcg", 1, 2); // 0
echo substr_compare("abcde", "BC", 1, 2, true); // 0
echo substr_compare("abcde", "bc", 1, 3); // 1
echo substr_compare("abcde", "cd", 1, 2); // -1
echo substr_compare("abcde", "abc", 5, 1); // warning
?>