(PHP 4, PHP 5, PHP 7)
ord — 转锟斤拷锟街凤拷锟斤拷锟斤拷一锟斤拷锟街斤拷为 0-255 之锟斤拷锟街�
$string
) : int
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锟矫猴拷锟斤拷锟斤拷 chr() 锟侥伙拷锟斤拷锟斤拷锟斤拷锟斤拷
string一锟斤拷锟街凤拷锟斤拷
锟斤拷锟斤拷 0 - 255 锟斤拷锟斤拷锟斤拷值锟斤拷
Example #1 ord() 锟斤拷锟斤拷
<?php
$str = "\n";
if (ord($str) == 10) {
echo "The first character of \$str is a line feed.\n";
}
?>
Example #2 锟斤拷锟� UTF-8 锟街凤拷锟斤拷锟斤拷每一锟斤拷锟街斤拷
<?php
declare(encoding='UTF-8');
$str = "??";
for ( $pos=0; $pos < strlen($str); $pos ++ ) {
$byte = substr($str, $pos);
echo 'Byte ' . $pos . ' of $str has value ' . ord($byte) . PHP_EOL;
}
?>
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