MySQL 喜欢 + php sprintf

发布于 2024-09-26 00:21:57 字数 311 浏览 2 评论 0原文

$test = sprintf("SELECT * FROM `table` WHERE `text` LIKE '%%s%'", mysql_real_escape_string('test'));

echo $test;

输出:

SELECT * FROM `table` WHERE `text` LIKE '%s

但它应该输出:

SELECT * FROM `table` WHERE `text` LIKE '%test%'
$test = sprintf("SELECT * FROM `table` WHERE `text` LIKE '%%s%'", mysql_real_escape_string('test'));

echo $test;

output:

SELECT * FROM `table` WHERE `text` LIKE '%s

but it should output:

SELECT * FROM `table` WHERE `text` LIKE '%test%'

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评论(5

橘虞初梦 2024-10-03 00:21:57
... LIKE '%%%s%%'", mysql_real_escape_string('test'));

要打印 % 字符,您需要将其自身转义。因此,前两个 %% 将打印 % 字符,而第三个用于类型说明符 %s。最后还需要一个双 %%

... LIKE '%%%s%%'", mysql_real_escape_string('test'));

To print the % character you need to escape it with itself. Therefore the first two %% will print the % character, while the third one is for the type specifier %s. You need a double %% at the end as well.

哭泣的笑容 2024-10-03 00:21:57

尝试:

$test = sprintf("SELECT * FROM `table` WHERE `text` LIKE '%%%s%%'", mysql_real_escape_string('test'));

sprintf中,如果你想得到%符号,你必须插入%%。因此,第一个通配符 %%%,字符串本身为 %s,最后一个通配符为 %%通配符%

Try:

$test = sprintf("SELECT * FROM `table` WHERE `text` LIKE '%%%s%%'", mysql_real_escape_string('test'));

In sprintf, if you want to get a % sign, you have to insert %%. So it's %% for the first wildcard %, %s for the string itself and %% for the last wildcard %.

千笙结 2024-10-03 00:21:57

您需要使用百分号 %% 转义百分号。

$test = sprintf("SELECT * FROM `table` WHERE `text` LIKE '%%%s%%'", mysql_real_escape_string('test'));

echo $test;

You need to escape the percent signs with a percent sign %%.

$test = sprintf("SELECT * FROM `table` WHERE `text` LIKE '%%%s%%'", mysql_real_escape_string('test'));

echo $test;
ˇ宁静的妩媚 2024-10-03 00:21:57

你把上下文搞混了。为了保持一致性,请将不在 SQL 单引号内的内容放在 sprintf() 格式字符串之外:

$test = sprintf(
          "SELECT * FROM `table` WHERE"
            . "`xt` LIKE '%s'",
          "%" . mysql_real_escape_string("test") . "%"
        );

You’re jumbling contexts. For consistency, put the things that aren't inside the SQL single quotes outside of the sprintf() format string:

$test = sprintf(
          "SELECT * FROM `table` WHERE"
            . "`xt` LIKE '%s'",
          "%" . mysql_real_escape_string("test") . "%"
        );
生活了然无味 2024-10-03 00:21:57
$test = "SELECT * FROM `table` WHERE `text` LIKE '%s%'" . mysql_real_escape_string('test');

echo $test;
$test = "SELECT * FROM `table` WHERE `text` LIKE '%s%'" . mysql_real_escape_string('test');

echo $test;
~没有更多了~
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