(PHP 5, PHP 7)
substr_compare — 锟斤拷锟斤拷锟狡帮拷全锟饺斤拷锟街凤拷锟斤拷锟斤拷锟斤拷偏锟斤拷位锟矫比斤拷指锟斤拷锟斤拷锟饺ｏ拷
$main_str
, string $str
, int $offset
[, int $length
[, bool $case_insensitivity = FALSE
]] ) : int
substr_compare() 锟斤拷偏锟斤拷位锟斤拷 offset 锟斤拷始锟饺斤拷 main_str 锟斤拷 str锟斤拷锟饺较筹拷锟斤拷为 length 锟斤拷锟街凤拷锟斤拷
main_str锟斤拷锟饺较的碉拷一锟斤拷锟街凤拷锟斤拷锟斤拷
str锟斤拷锟饺较的第讹拷锟斤拷锟街凤拷锟斤拷锟斤拷
offset锟饺较匡拷始锟斤拷位锟矫★拷锟斤拷锟轿拷锟斤拷锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷锟斤拷尾锟斤拷锟斤拷始锟斤拷锟斤拷
length
锟饺较的筹拷锟饺★拷默锟斤拷值为 str 锟侥筹拷锟斤拷锟斤拷 main_str 锟侥筹拷锟饺硷拷去位锟斤拷偏锟斤拷锟斤拷 offset 锟斤拷锟斤拷锟斤拷械慕洗锟斤拷摺锟�
case_insensitivity
锟斤拷锟� case_insensitivity 为 TRUE锟斤拷锟饺较斤拷锟斤拷锟斤拷锟街达拷小写锟斤拷
锟斤拷锟� main_str 锟斤拷偏锟斤拷位锟斤拷 offset 锟斤拷锟斤拷锟斤拷址锟斤拷锟叫★拷锟� str锟斤拷锟津返伙拷小锟斤拷 0 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟� str锟斤拷锟津返回达拷锟斤拷 0 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟饺ｏ拷锟津返伙拷 0锟斤拷锟斤拷锟� offset 锟斤拷锟节碉拷锟斤拷 main_str 锟侥筹拷锟饺伙拷 length 锟斤拷锟斤拷锟斤拷为小锟斤拷 1 锟斤拷值锟斤拷 PHP 5.5.11 之前锟侥版本锟斤拷锟斤拷substr_compare() 锟斤拷锟斤拷印锟斤拷一锟斤拷锟斤拷锟斤拷锟斤拷息锟斤拷锟揭凤拷锟斤拷 FALSE锟斤拷
| 锟芥本 | 说锟斤拷 |
|---|---|
| 5.5.11 |
length 锟斤拷锟斤拷锟斤拷 0锟斤拷
|
| 5.1.0 |
锟斤拷锟斤拷使锟矫革拷锟斤拷锟斤拷 offset 锟斤拷锟斤拷锟斤拷
|
Example #1 substr_compare() 锟斤拷锟斤拷
<?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
?>