PHP的echo和print小谈
自学php快2个多月了。学着做点东西,基本函数用的还凑合,用help点开加search找。基本没问题
不过那个php主页的说明实在是很模糊,很多参数说完了还是看不懂,有实践才有真理。这点到哪里都没有错。
碰到最初的就是echo和print的区别了,自己总结了下:
同是字符串输出echo和echo、到底有啥区别尼?!!
PHP?言里说,其实哪个都不算很严密。他们都可以不用括弧()而正常工作。
目前只发现3点比较大的区别。
print " Hello " , " World " ; // syntax error。
echo " Hello " , " World " ; // syntax ok!!
※echo()用了括弧「()」以后,加逗号「,」区分?数字符串也不行!请注意。
2. print()返回?果、 echo()却不返回。 1 $output1 = print " Hello World " ; // 这个有输出结果的
2 $output2 = echo " Hello World " ; // 这个却没有哦
3.如果不需要返回结果操作的话、echo()要稍微快一些。
echo ()vs print ()
Echoing 100000 of nothing
Exe Time is 0.034925937652588 secs .
Printing 100000 of nothing
Exe Time i s 0.037981986999512 secs .
这种差距你需要么请自己判断吧

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