每个人的成功之路可能有所不同，但我相信成功需要每个想要成功的人人民努力奋斗和奋斗，通往成功的每条道路都是坎s曲折。
先编辑command.php文件
echo 'hello'.PHP_EOL;
然后编辑console.php文件
for($i=1;$i<=3;++$i){
require 'command1.php';
}
原本想要包含并执行这个echo，没想到写错了文件名，如果是require，会报出这样的错误：
Warning: require(command1.php): failed to open stream: No such file or directory in console.php on line 4 Fatal error: require(): Failed opening required 'command1.php' (include_path='.') in console.php on line 4 PHP Warning: require(command1.php): failed to open stream: No such file or directory in console.php on line 4 PHP Fatal error: require(): Failed opening required 'command1.php' (include_path='.') in console.php on line 4
如果把require改为include
for($i=1;$i<=3;++$i){
include 'command1.php';
}
会报出这样的错误：
Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4 Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4 Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4 Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4 Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4 Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4 PHP Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4 PHP Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4 PHP Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4 PHP Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4 PHP Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4 PHP Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4
如果使用require_once或者include_once，只要包含路径正确，那么循环只执行一次。
总结：
使用require，如果文件没有包含成功，就会报出一个fatal error，整个程序就中止了。
使用include，如果文件没有包含成功，就会报出一个普通的warning，之后的代码仍会执行。
如果你的Web程序使用了MVC这种对文件包含强依赖的设计方法，请使用require_once。
本文PHP中include和require的区别实例分析到此结束。太阳像个老大老大的火球，光线灼人，公路被烈日烤得发烫，脚踏下去一步一串白烟。小编再次感谢大家支持！
