Php substr compare
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PHP function substr_compare
This function compares two strings.
Syntax substr_compare
- string1: main string input
- string2: second string input
- startpos: specifies where to start comparing in string1 and string2
- length: specifies length of the comparision
- case: True (case insensitive), Default is FALSE (case sensitive)
substr_compare(string1, string2, startpos, length, case)
Return
- 0: string1 and string2 are equal
- > 0: string1 is greater than string2
- < 0: string1 is less than string2
Example 1
- string1: abcde
- string2: cde
- startpos: 2
- length: 3
- return: 0 (string1=string2)
<?php
echo substr_compare("abcde", "cde", 2, 3);
?>
Output
0
Example 2
<?php
echo substr_compare("abcde", "CDE", 2, 3, FALSE); //1
echo substr_compare("abcde", "CDE", 2, 3, TRUE); //0
?>
Output
<?php
echo substr_compare("abcde", "bc", 1, 2); // 0
echo substr_compare("abcde", "de", -2, 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
?>
