<?php
$s = 'monkey';
$t = 'many monkeys';
printf("[%s]/n", $s); // standard string output
printf("[%10s]/n", $s); // right-justification with spaces
printf("[%-10s]/n", $s); // left-justification with spaces
printf("[%010s]/n", $s); // zero-padding works on strings too
printf("[%'#10s]/n", $s); // use the custom padding character '#'
printf("[%10.10s]/n", $t); // left-justification but with a cutoff of 10 characters
?>
The printout of this program would be:
[monkey]
[ monkey]
[monkey ]
[0000monkey]
[####monkey]
[many monke]
例3：zero-padded integers
复制代码 代码如下:
<?php
$isodate = sprintf("%04d-%02d-%02d", $year, $month, $day);
?>
例4：formatting currency
复制代码 代码如下:
<?php
$money1 = 68.75;
$money2 = 54.35;
$money = $money1 + $money2;
// echo $money will output "123.1";
$formatted = sprintf("%01.2f", $money);
// echo $formatted will output "123.10"
?>
例5： sprintf() : scientific notation
复制代码 代码如下:
<?php
$number = 362525200;
echo sprintf("%.3e", $number); // outputs 3.63e+8
?>
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