PHP 如何把一个对象转换成字符串 All In One

PHP 如何把一个对象转换成字符串 All In One

https://www.php.net/manual/zh/function.json-encode.php

demos

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php 如何判断 一个变量是否是数组

$cars = array("Volvo","BMW","Toyota");

if(is_array($cars)) {
   echo "<h1> $cars[0] </h1>";
}

https://www.cnblogs.com/zengjfgit/p/6550157.html

https://www.runoob.com/php/php-looping-for.html

PHP 关联数组

<?php
$arr = array("Peter"=>"35","Ben"=>"37","Joe"=>"43");

echo "Peter is " . $arr['Peter'] . " years old.";

foreach($arr as $key=>$value) {
    echo "Key= $key, Value= $value <br>";
}

?>

https://www.runoob.com/php/php-arrays.html

refs

https://www.php.net/manual/en/function.json-encode.php

https://www.php.net/manual/en/json.constants.php

https://www.runoob.com/php/php-arrays.html

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