PHP chr() 函數
PHP的chr()函數用于從數字生成一個單字節字符串。愛掏網 - it200.com換句話說，我們可以說它返回指定的ASCII值的字符。愛掏網 - it200.com
string chr ( int $bytevalue );
| Parameter | Description | Required/Optional |
|---|---|---|
| ascii | An ASCII value | Required |
示例1
<?php
char =52;
echo "Your character is :".char;
echo "<br>"."By using 'chr()' function your value is: ".chr($char);// decimal Value
?>
輸出：
Your character is :52
By using 'chr()' function your value is: 4
示例2
<?php
char =052;
echo "Your character is :".char;
echo "<br>"."By using 'chr()' function your value is: ".chr($char); // Octal Value
?>
輸出：
Your character is :42
By using 'chr()' function your value is: *
示例3
<?php
echo "Your character is :0x52";
echo "<br>"."By using 'chr()' function your value is: ".chr(0x52); // Hex value
?>
輸出：
Your character is :0x52
By using 'chr()' function your value is: R
示例4
<?php
str = chr(43); // +str2 = chr(61); // =
echo("2 str 2str2 4");
?>
輸出:
2 + 2 = 4
在上述程序中，chr(43)的ASCII值是’+’，chr(61)的ASCII值是’=’。愛掏網 - it200.com
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