substr_compare

PHP -> Funkcie -> Funkcie pre prácu s reťazcami PHP -> substr_compare

Syntax

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

Popis

Príkaz jazyka PHP
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.

Príklad

<?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
?>