ຫົວຂໍ້ PHP strchr()

ຕົວຢ່າງ

ຊອກຫາ "world" ໃນ "Hello world!" ເພື່ອການຄົ້ນຫາຄັ້ງທໍາອິດ ແລະ ກັບຄືນຕາມຄຳກ່າວນີ້:

<?php
echo strchr("Hello world!","world");
?>

ການດຳເນີນການພິມ

Definition and usage

The strchr() function searches for the first occurrence of a string in another string.

This function is an alias of the strstr() function.

Note:This function is binary safe.

Note:This function is case sensitive. For a case-insensitive search, use stristr() Function.

Syntax

strchr(string,search,before_search);
Parameter Description
string Required. Specifies the string to be searched in.
search

Required. Specifies the string to be searched.

If the parameter is a number, it will search for the character corresponding to the ASCII value of the number.

before_search

Optional. The default value is "false" boolean.

If set to "true", it will return search The string part before the first occurrence of the parameter.

Technical details

Return value: ກັບຄືນຄຳທີ່ພາຍຫຼັງຈາກການພິມຄຳຊອກ (from the match point). If the search string is not found, it returns FALSE.
PHP Version: 4+
ບັນທຶກການປັບປຸງ: ໃນ PHP 5.3, ໄດ້ສະເໜີມາ: before_search ຄວາມມູນປະກອບ

ຕົວຢ່າງອື່ນ

ຕົວຢ່າງ 1

ການຊອກຫາຄຳໃນ ASCII ຄວາມ "o" ແລະກັບຄືນຄຳທີ່ພາຍຫຼັງ:

<?php
echo strchr("Hello world!",111);
?>

ການດຳເນີນການພິມ

ຕົວຢ່າງ 2

ການກັບຄືນ "world" ຄັ້ງທຳອິດຂອງຄຳໃນ:

<?php
echo strchr("Hello world!","world",true);
?>

ການດຳເນີນການພິມ