PHP中include和require的区别实例分析
php  /  管理员 发布于 6年前   96
先编辑command.php文件 然后编辑console.php文件 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: 如果把require改为include 会报出这样的错误: 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。echo 'hello'.PHP_EOL;
for($i=1;$i<=3;++$i){require 'command1.php';}
Warning: require(command1.php): failed to open stream: No such file or directory in console.php on line 4Fatal error: require(): Failed opening required 'command1.php' (include_path='.') in console.php on line 4PHP Warning: require(command1.php): failed to open stream: No such file or directory in console.php on line 4PHP Fatal error: require(): Failed opening required 'command1.php' (include_path='.') in console.php on line 4
for($i=1;$i<=3;++$i){include 'command1.php';}
Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4PHP Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4PHP Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4PHP Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4PHP Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4PHP Warning: include(command1.php): failed to open stream: No such file or directory in console.php on line 4PHP Warning: include(): Failed opening 'command1.php' for inclusion (include_path='.') in console.php on line 4
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