PYTHON substr_compare

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PHP substr_compare

PHP original manual for substr_compare [ show | php.net ]

substr_compare

(PHP 5)

substr_compare — Binary safe comparison of 2 strings from an offset, up to length characters

Description

int substr_compare ( string $main_str , string $str , int $offset [, int $length= 0 [, bool $case_insensitivity= false ]] )

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

Parameters

main_str
str
offset: The start position for the comparison. If negative, it starts counting from the end of the string.
length: The length of the comparison.
case_insensitivity: If case_insensitivity is TRUE, comparison is case insensitive.

Return Values

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.

Changelog

Version	Description
5.1.0	Added the possibility to use a negative `offset` .

Examples

Example #1 A substr_compare() example


<?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
?>

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