PYTHON substr_compare

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PHP substr_compare

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

substr_compare

(PHP 5)

substr_compareBinary 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"12); // 0
echo substr_compare("abcde""de", -22); // 0
echo substr_compare("abcde""bcg"12); // 0
echo substr_compare("abcde""BC"12true); // 0
echo substr_compare("abcde""bc"13); // 1
echo substr_compare("abcde""cd"12); // -1
echo substr_compare("abcde""abc"51); // warning
?>