How to convert numbers in string to array in php

php method to convert numbers in a string into an array: 1. Use the regular expression method, the code is [$reg='/(\d{3}(\.\d )?)/ is']; 2. Use the [in_array] method, the code is [if(in_array($str[$i],$temp))].

php method to convert numbers in a string into an array:

The first method , use regular expressions:

function findNum($str=''){ $str=trim($str); if(empty($str)){return '';} $reg='/(\d{3}(\.\d+)?)/is';//匹配数字的正则表达式 preg_match_all($reg,$str,$result); if(is_array($result)&&!empty($result)&&!empty($result[1])&&!empty($result[1][0])){ return $result[1][0]; } return ''; }

The second method, use the in_array method:

function findNum($str=''){ $str=trim($str); if(empty($str)){return '';} $temp=array('1','2','3','4','5','6','7','8','9','0'); $result=''; for($i=0;$i
        

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The third method, use the is_numeric function:

function findNum($str=''){ $str=trim($str); if(empty($str)){return '';} $result=''; for($i=0;$i
        

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