自定义函数实现字符串数组互转

自定义函数 实现字符串转数组

<?php$str = 'I want to go home ';strToArr( $str );function strToArr( $str ){ $arr = []; $s = ''; for ( $i=0; $i < strlen( $str ); $i++) { if( $str[$i] == ' ' ) { $arr[] = $s; $s = ''; } else { $s.= $str[$i]; } } if( $s != '' && $s != ' ' ) { $arr[] = $s; } return $arr;}?>

自定义函数 实现数组转字符串

<?php$arr = ['I', 'want', 'to', 'go','home'];echo arrToStr( $arr );function arrToStr( $arr ){ $str = ''; foreach ($arr as $key => $value) { if( $key == 0 ) { $str = $value; } else { $str .= ' '.$value; } } return $str;}?>

 

转载于:https://www.cnblogs.com/liujunyue/p/11510234.html