PHP string to array and array to string functions explained
In our actual PHP development, data type conversion is very commonly used, and as a programmer, data type conversion must also be mastered. In this article, we will talk about PHP string to array and array to character. String, this is very common in development. To get a string, we need to convert it into an array. The solution only requires a function, so let’s take a look at it! It’s so simple!
Recommended manual:php complete self-study manual
##implode Use a string to turn an array into a string
Code example:<?php
$array = array('lastname', 'email', 'phone');
$comma_separated = implode(",", $array);
echo $comma_separated; // lastname,email,phone
// Empty string when using an empty array:
var_dump(implode('hello', array())); // string(0) ""
?>explode Use a string to split Another string, returns an array
Code example:<?php
// 示例 1
$pizza = "piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = explode(" ", $pizza);
echo $pieces[0]; // piece1
echo $pieces[1]; // piece2
// 示例 2
$data = "foo:*:1023:1000::/home/foo:/bin/sh";
list($user, $pass, $uid, $gid, $gecos, $home, $shell) = explode(":", $data);
echo $user; // foo
echo $pass; // *
?>str_split Convert string to array
Code example:<?php $str = "Hello Friend"; $arr1 = str_split($str); $arr2 = str_split($str, 3); print_r($arr1); print_r($arr2); ?>
/*
Array
(
[0] => H
[1] => e
[2] => l
[3] => l
[4] => o
[5] =>
[6] => F
[7] => r
[8] => i
[9] => e
[10] => n
[11] => d
)
Array
(
[0] => Hel
[1] => lo
[2] => Fri
[3] => end
)
*///这里是一串对半角的假名的枚举
function kana_Perl($katakana){
$katakana_array = array(
1=>"ｱ",2=>"ｲ",3=>"ｳ",4=>"ｴ",5=>"ｵ",
6=>"ｶ",7=>"ｷ",8=>"ｸ",9=>"ｹ",10=>"ｺ",
11=>"ｻ",12=>"ｼ",13=>"ｽ",14=>"ｾ",15=>"ｿ",
16=>"ﾀ",17=>"ﾁ",18=>"ﾂ",19=>"ﾃ",20=>"ﾄ",
21=>"ﾅ",22=>"ﾆ",23=>"ﾇ",24=>"ﾈ",25=>"ﾉ",
26=>"ﾊ",27=>"ﾋ",28=>"ﾌ",29=>"ﾍ",30=>"ﾎ",
31=>"ﾏ",32=>"ﾐ",33=>"ﾑ",34=>"ﾒ",35=>"ﾓ",
36=>"ﾔ",37=>"ﾕ",38=>"ﾖ",
39=>"ﾗ",40=>"ﾘ",41=>"ﾙ",42=>"ﾚ",43=>"ﾛ",
44=>"ﾜ",45=>"ｦ",46=>"ﾝ",
47=>"ｧ",48=>"ｨ",49=>"ｩ",50=>"ｪ",51=>"ｫ",
52=>"ｬ",53=>"ｭ",54=>"ｮ",55=>"ｯ",56=>"､",
57=>"｡",58=>"ｰ",59=>"ﾞ",60=>"ﾟ"
);
$check_result = array_search($katakana,$katakana_array);
return $check_result;
}
//这是一段匹配的法则，注意这里是i +=2,因为一个文字占2位
function substr_cut($katakana){
$i_end = 2;
$check_sucess = "";
for($i_start=0; $i_start < strlen($katakana); $i_start=$i_start+2){
$str_cut = substr($katakana,$i_start,$i_end);
echo '$str_cut='.$str_cut.'<br>';
$check_sucess = kana_Perl($str_cut);
if(!$check_sucess){
break;
}
}
return $check_sucess;
}function substr_cut($katakana){
$i_end = 1; //打断位数长度，分清楚英文和中文
$check_sucess = array();
for($i_start=0; $i_start < strlen($katakana); $i_start=$i_start+1){
$str_cut = substr($katakana,$i_start,$i_end);
$check_sucess[$i_start] = $str_cut;
echo '$str_cut='.$str_cut.'<br>';
}
return $check_sucess;
}Recommended related articles:1.The above content is all the content of PHP string to array and array to string, everyone is serious Practice it a few more times, it will be of great use in your future development career!
PHP Converting arrays and strings to each other2.
Detailed explanation of the two methods of converting php arrays to strings [Video attached]
Related video recommendations:
1. Dugu Jiujian (4)_PHP video tutorial
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