php語(yǔ)言基礎(chǔ)入門(mén)
導(dǎo)語(yǔ)：PHP語(yǔ)法吸收了C語(yǔ)言、Java和Perl的特點(diǎn)，利于學(xué)習(xí)，使用廣泛，主要適用于Web開(kāi)發(fā)領(lǐng)域。下面是PHP語(yǔ)言基礎(chǔ)人們知識(shí)，歡迎參考!
1. 代碼嵌在內(nèi)
2.輸出函數(shù)echo,相當(dāng)于js中的document.write
3.可以在打印雙引號(hào)時(shí)用單引號(hào)或者在打印雙引號(hào)時(shí)使用單引號(hào)。
echo 'She said,"how you are?"';
echo "she said,'how you are?'";
4.在同樣的引號(hào)或者打印需要轉(zhuǎn)義的符號(hào)可以使用,echo 'I 'm just ducky.'; echo"she said,"How are you?"";
5.注釋推薦使用shell風(fēng)格，#this is a comment
6.變量同c，前面有$.
echo $money;
echo "hello,$money";
7.連接字符串 $aa = "sdfs";$bb = "fsdfs"; $cc = $aa.$bb;
$cc = $cc."fsdfs";
8.關(guān)于數(shù)字
$n = 2.13;
$n = round($n); /pic/p>
$n = 3.13141;
$n = round($n,3); /pic/p>
$n = number_format($n); /pic/p>
$n = number_format($n,4);/pic/p>
8.關(guān)于數(shù)字
$n = 2.13;
$n = round($n); /pic/p>
$n = 3.13141;
$n = round($n,3); /pic/p>
$n = number_format($n); /pic/p>
$n = number_format($n,4);/pic/p>
9.常量
define('NAME','VALUE');
echo NAME;
10.get用于發(fā)起數(shù)據(jù)請(qǐng)求，post用戶(hù)單向發(fā)送數(shù)據(jù)
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