PHP exercises (2), php exercises_PHP tutorial-PHP Tutorial-php.cn

PHP exercises (2), php exercises_PHP tutorial

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Release： 2016-07-12 08:54:16

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PHP exercises (2), php exercises

Program 6.
Title: Assume that a person has 100,000 cash and needs to pay a toll every time he passes through an intersection. The toll payment rule is that when his cash is greater than 50,000, he needs to pay %5 each time. If his cash is less than or equal to 50,000, he needs to pay 5,000 each time. Ask this person whether he can pass by How many times have we been at this intersection.

<span> 1</span> <span>$money</span> = 100000<span>;
</span><span> 2</span> <span>$i</span> = 0<span>;
</span><span> 3</span> <span>while</span>(<span>$money</span> >= 5000<span>) {
</span><span> 4</span>     <span>if</span>( <span>$money</span> > 50000<span>) {
</span><span> 5</span>         <span>$money</span> *= 95/100<span>;
</span><span> 6</span>     } <span>else</span> <span>if</span>( <span>$money</span> <= 50000<span>) {
</span><span> 7</span>         <span>$money</span> -= 5000<span>;
</span><span> 8</span> <span>    }
</span><span> 9</span>     <span>$i</span>++<span>;
</span><span>10</span> <span>}
</span><span>11</span> <span>echo</span> '可以经过' . <span>$i</span> . '次路口<br/>';

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Program 7.
Title: Print the multiplication table

<span>1</span> <span>for</span>(<span>$i</span> = 1; <span>$i</span> < 10; <span>$i</span>++<span>) {
</span><span>2</span>     <span>for</span>(<span>$j</span> = 1; <span>$j</span> <= <span>$i</span>; <span>$j</span>++<span>) {
</span><span>3</span>         <span>echo</span> <span>$j</span> . 'x' . <span>$i</span> . '=' . <span>$i</span>*<span>$j</span> . '  '<span>;
</span><span>4</span> <span>    }
</span><span>5</span>     <span>echo</span> '<br/>'<span>;
</span><span>6</span> }

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Program 8.
Title: One hundred coins and one hundred chickens, a rooster costs 5 coins, a hen costs 3 coins, a small There are three chickens for 1 penny, and 100 chickens are bought for 100 penny. How many roosters, hens, and chicks are there?

<span> 1</span> <span>$x1</span> = 0; <span>//</span><span>公鸡个数</span>
<span> 2</span> <span>$x2</span> = 0; <span>//</span><span>母鸡个数</span>
<span> 3</span> <span>$x3</span> = 0; <span>//</span><span>小鸡个数</span>
<span> 4</span> <span>for</span>( <span>$x1</span> = 1; <span>$x1</span> <= 20; <span>$x1</span>++<span>) {
</span><span> 5</span>     <span>for</span>( <span>$x2</span> = 1; <span>$x2</span> <= (33-<span>$x1</span>); <span>$x2</span>++<span>) {
</span><span> 6</span>         <span>$x3</span> = 100 - <span>$x1</span> - <span>$x2</span><span>;
</span><span> 7</span>         <span>if</span>( 100 == (<span>$x1</span>*5 + <span>$x2</span>*3 + <span>$x3</span>/3<span>) ) {
</span><span> 8</span>             <span>echo</span> '公鸡个数为：' . <span>$x1</span> . '母鸡个数为：' . <span>$x2</span> . '小鸡个数为' . <span>$x3</span> . '<br/>'<span>;
</span><span> 9</span> <span>        }
</span><span>10</span> <span>    }
</span><span>11</span> }

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Program 9.
Title: Find a prime number between 1 and 100

<span> 1</span> <span>$num</span> = 2<span>;
</span><span> 2</span> <span>while</span>(<span>$num</span> <= 100<span>) {
</span><span> 3</span>     <span>if</span>( <span>$num</span> <= 3<span>) {
</span><span> 4</span>         <span>echo</span> <span>$num</span> . '  '<span>;
</span><span> 5</span>     } <span>else</span><span> {
</span><span> 6</span>         <span>for</span>( <span>$j</span> = 2; <span>$j</span> <= <span>$num</span>; <span>$j</span>++<span>) {
</span><span> 7</span>             <span>if</span>( <span>$j</span> == <span>$num</span><span> ) {
</span><span> 8</span>                 <span>echo</span> <span>$num</span> . '  '<span>;
</span><span> 9</span>             } <span>else</span> <span>if</span>( <span>$num</span>%<span>$j</span> == 0<span>) {
</span><span>10</span>                 <span>break</span><span>;
</span><span>11</span> <span>            }
</span><span>12</span> <span>        }
</span><span>13</span> <span>    }
</span><span>14</span>     <span>$num</span>++<span>;
</span><span>15</span> }

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