Output:<\/strong><\/p>\n![\"PHP](\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/172490817263515.png\")
<\/p>\n
In the above program, we can see when we are writing PHP code in HTML structure; we start with “< ?php”, then we write the code, and at the end, the closing tag for PHP code is “? >”. It has an array(5), which means it has 5 elements in an array. Suppose we have not set anything or have not passed the asso_arr parameter such as “var_dump(json_decode($json_string));” then this value would give us access to the property of the object in an array as shown in the below screenshot.<\/p>\n\n\n
![\"PHP](\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/172490817395731.png\")
<\/p>\n
Now we will see an example below: an invalid JSON format and passing this string to the json_decode() function and what error and output it will give. We will also see how to print those arrays, which can be accessed using the “echo” function in the below section.<\/p>\n
Example #2<\/h4>\n
In the below program, we will see how to access an element of an array using the echo function.<\/p>\n
Code:<\/strong><\/p>\n\n\n\nEducba- PHP json_decode<\/title>\n<\/head>\n<body>
<h1><a href="http://www.miracleart.cn/">国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂</a></h1>\n<?php\n$json_string = '[\n{\n\"Companyname\": \"Educba\",\n\"Director\": \"Snehal\",\n\"phnumber\": \"89945954874\"\n},\n{\n\"Companyname\": \"Google\",\n\"Director\": \"Ann\",\n\"phnumber\": \"9877564694\"\n}\n]';\n$x = json_decode($json_string);\necho $x[0]->Companyname;\n?>\n<\/body>\n<\/html><\/pre>\n<p><strong>Output:<\/strong><\/p>\n<p><img src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/172490817579936.png\" alt=\"PHP json_decode\" ><\/p>\n<p>In the above program, we can see when we have declared a json_string and accessed any of the elements in the array; we use array[index] in any programming language. similarly, we write it with the echo function, and in the above code, we have to observe that we have not passed the asso_arr parameter in the json_decode() function, so to access the element, we have to write “echo $x[0]-> Companyname;” and if we set the second parameter to “true” then we have to write “echo $x[0][‘Companyname’];”.<\/p>\n\n\n<h4>Example #3<\/h4>\n<p>In the below, we will see passing an invalid JSON string to the function and try printing the errors also.<\/p>\n<p><strong>Code:<\/strong><\/p>\n<pre><!DOCTYPE html>\n<html lang=\"en\">\n<head>\n<title>Educba- PHP json_decode<\/title>\n<\/head>\n<body>\n<?php\n$json_string = '[\n{\n\"Companyname\": \"Educba\"\n\"Director\": \"Snehal\"\n\"phnumber\": \"89945954874\"\n\"Companyname\": \"Google\"\n\"Director\": \"Ann\"\n\"phnumber\": \"9877564694\"\n}\n]';\n$x = json_decode($json_string);\necho $x[0]->Companyname;\necho json_last_error();\necho json_last_error_msg();\n?>\n<\/body>\n<\/html><\/pre>\n<p><strong>Output:<\/strong><\/p>\n<p><img src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/172490817857713.png\" alt=\"PHP json_decode\" ><\/p>\n<p>We print the error information, such as “4 syntax errors,” using the json_last_error() and json_last_error_msg() functions. These functions provide details about the errors related to the PHP code written in the example above. If we don’t want to print any error messages using the error functions, the output will be “null,” indicating that the converted PHP objects or the JSON data itself are invalid.<\/p>\n<p><img src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/172490818020372.png\" alt=\"PHP json_decode\" ><\/p>"} </script>
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<a href="#Working-of-Json-decode-in-PHP" title="Working of Json_decode() in PHP" >Working of Json_decode() in PHP</a>
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<a href="#Examples-of-PHP-json-decode" title="Examples of PHP json_decode" >Examples of PHP json_decode</a>
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<a href="#Example" title="Example #3" >Example #3</a>
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<span>PHP json_decode</span>
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<h1 class="Articlelist_txts_title">PHP json_decode</h1>
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<span id="377j5v51b" class="Articlelist_txts_time">Aug 29, 2024 pm 01:09 PM</span>
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<span id="377j5v51b" class="Articlelist_txts_infoss on">php</span>
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<p>In PHP, the inbuilt function json_decode() function is defined as a function; as its name suggests it is a function for conversion of any JSON a standard text format objects or decoding of JSON objects to PHP objects, taking a JSON string as a parameter which this function converts or decodes it and returns the encoded values which were in JSON into proper PHP objects. The PHP generally provides a function that takes a JSON string that usually represents a javascript array or object literals for converting this encoded string in JSON format to a particular PHP object data type.</p>
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<h3 id="Working-of-Json-decode-in-PHP">Working of Json_decode() in PHP</h3>
<p>In this article, json_decode() is an inbuilt function provided by PHP for converting or decoding the JSON string into PHP objects.?In PHP, the <code>json_decode()</code> function decodes a JSON string and converts it into PHP objects or data types. It takes the JSON data as a parameter and returns the corresponding PHP representation.</p>
<p>In the below section, we will see syntax and examples of using the json_decode() function:</p>
<p><strong>Syntax:</strong></p>
<pre class="brush:php;toolbar:false">json_decode(json_string, asso_arr, recur_depth, opt<em>)</em></pre>
<p><strong>Parameters:</strong></p>
<p>Json_string: this parameter is compulsory to specify the JSON-encoded string for converting it into PHP objects</p>
<ul>
<li>
<strong>Asso_arr:</strong> this parameter is used to specify the Boolean values that can return an associated array if the value is set to true, else returns an object if it is set to false. This parameter is optional and has false as the default value.</li>
<li>
<strong>Recur_depth:</strong> this parameter is used to specify the depth of the recursion, and this is also an optional parameter with 512 as a default value.</li>
<li>
<strong>Opt:</strong> this parameter is used to specify the bitmask of JSON_OBJECT_AS_ARRAY, JSON_BIGINT_AS_STRING, JSON_INVALID_UTF8_SUBSTITUTE,, JSON_THROW_ON_ERROR and this is also an optional parameter.</li>
</ul>
<p>Now let us see a simple example that uses json_decode() of PHP in an HTML structure.</p>
<h3 id="Examples-of-PHP-json-decode">Examples of PHP json_decode</h3>
<p>Following are the examples are given below:</p>
<h4 id="Example">Example #1</h4>
<p><strong>Code:</strong></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
<title>Educba- PHP json_decode</title>
</head>
<body>
<?php
$json_string = '{
"CompayName": "Educba",
"Director": "Snehal",
"Employee": "Amardeep",
"address": {
"ColonyName": "Shivaji road",
"city": "Baramati",
"state": "Maharashtra",
"postalCode": "1234567"
},
"TelephoneNumbers": [
{ "type": "Work", "phonenumber": "9876543210" }
]
}';
var_dump(json_decode($json_string, true));
?>
</body>
</html></pre>
<p><strong>Output:</strong></p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/172490817263515.png" class="lazy" alt="PHP json_decode" ></p>
<p>In the above program, we can see when we are writing PHP code in HTML structure; we start with “< ?php”, then we write the code, and at the end, the closing tag for PHP code is “? >”. It has an array(5), which means it has 5 elements in an array. Suppose we have not set anything or have not passed the asso_arr parameter such as “var_dump(json_decode($json_string));” then this value would give us access to the property of the object in an array as shown in the below screenshot.</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/172490817395731.png" class="lazy" alt="PHP json_decode" ></p>
<p>Now we will see an example below: an invalid JSON format and passing this string to the json_decode() function and what error and output it will give. We will also see how to print those arrays, which can be accessed using the “echo” function in the below section.</p>
<h4 id="Example">Example #2</h4>
<p>In the below program, we will see how to access an element of an array using the echo function.</p>
<p><strong>Code:</strong></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
<title>Educba- PHP json_decode</title>
</head>
<body>
<?php
$json_string = '[
{
"Companyname": "Educba",
"Director": "Snehal",
"phnumber": "89945954874"
},
{
"Companyname": "Google",
"Director": "Ann",
"phnumber": "9877564694"
}
]';
$x = json_decode($json_string);
echo $x[0]->Companyname;
?>
</body>
</html></pre>
<p><strong>Output:</strong></p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/172490817579936.png" class="lazy" alt="PHP json_decode" ></p>
<p>In the above program, we can see when we have declared a json_string and accessed any of the elements in the array; we use array[index] in any programming language. similarly, we write it with the echo function, and in the above code, we have to observe that we have not passed the asso_arr parameter in the json_decode() function, so to access the element, we have to write “echo $x[0]-> Companyname;” and if we set the second parameter to “true” then we have to write “echo $x[0][‘Companyname’];”.</p>
<h4 id="Example">Example #3</h4>
<p>In the below, we will see passing an invalid JSON string to the function and try printing the errors also.</p>
<p><strong>Code:</strong></p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
<title>Educba- PHP json_decode</title>
</head>
<body>
<?php
$json_string = '[
{
"Companyname": "Educba"
"Director": "Snehal"
"phnumber": "89945954874"
"Companyname": "Google"
"Director": "Ann"
"phnumber": "9877564694"
}
]';
$x = json_decode($json_string);
echo $x[0]->Companyname;
echo json_last_error();
echo json_last_error_msg();
?>
</body>
</html></pre>
<p><strong>Output:</strong></p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/172490817857713.png" class="lazy" alt="PHP json_decode" ></p>
<p>We print the error information, such as “4 syntax errors,” using the json_last_error() and json_last_error_msg() functions. These functions provide details about the errors related to the PHP code written in the example above. If we don’t want to print any error messages using the error functions, the output will be “null,” indicating that the converted PHP objects or the JSON data itself are invalid.</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/172490818020372.png" class="lazy" alt="PHP json_decode" ></p><p>The above is the detailed content of PHP json_decode. For more information, please follow other related articles on the PHP Chinese website!</p>
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<a href="http://www.miracleart.cn/faq/1796828544.html" title="How to combine two php arrays unique values?" class="phphistorical_Version2_mids_title">How to combine two php arrays unique values?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jul 02, 2025 pm 05:18 PM</span>
<p class="Articlelist_txts_p">To merge two PHP arrays and keep unique values, there are two main methods. 1. For index arrays or only deduplication, use array_merge and array_unique combinations: first merge array_merge($array1,$array2) and then use array_unique() to deduplicate them to finally get a new array containing all unique values; 2. For associative arrays and want to retain key-value pairs in the first array, use the operator: $result=$array1 $array2, which will ensure that the keys in the first array will not be overwritten by the second array. These two methods are applicable to different scenarios, depending on whether the key name is retained or only the focus is on</p>
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<a href="http://www.miracleart.cn/faq/1796829119.html" title="How to use php exit function?" class="phphistorical_Version2_mids_title">How to use php exit function?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jul 03, 2025 am 02:15 AM</span>
<p class="Articlelist_txts_p">exit() is a function in PHP that is used to terminate script execution immediately. Common uses include: 1. Terminate the script in advance when an exception is detected, such as the file does not exist or verification fails; 2. Output intermediate results during debugging and stop execution; 3. Call exit() after redirecting in conjunction with header() to prevent subsequent code execution; In addition, exit() can accept string parameters as output content or integers as status code, and its alias is die().</p>
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<a href="http://www.miracleart.cn/faq/1796830597.html" title="Applying Semantic Structure with article, section, and aside in HTML" class="phphistorical_Version2_mids_title">Applying Semantic Structure with article, section, and aside in HTML</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jul 05, 2025 am 02:03 AM</span>
<p class="Articlelist_txts_p">The rational use of semantic tags in HTML can improve page structure clarity, accessibility and SEO effects. 1. Used for independent content blocks, such as blog posts or comments, it must be self-contained; 2. Used for classification related content, usually including titles, and is suitable for different modules of the page; 3. Used for auxiliary information related to the main content but not core, such as sidebar recommendations or author profiles. In actual development, labels should be combined and other, avoid excessive nesting, keep the structure simple, and verify the rationality of the structure through developer tools.</p>
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<a href="http://www.miracleart.cn/faq/1796827097.html" title="How do I access session data in PHP?" class="phphistorical_Version2_mids_img">
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<a href="http://www.miracleart.cn/faq/1796827097.html" title="How do I access session data in PHP?" class="phphistorical_Version2_mids_title">How do I access session data in PHP?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 30, 2025 am 01:33 AM</span>
<p class="Articlelist_txts_p">To access session data in PHP, you must first start the session and then operate through the $_SESSION hyperglobal array. 1. The session must be started using session_start(), and the function must be called before any output; 2. When accessing session data, check whether the key exists. You can use isset($_SESSION['key']) or array_key_exists('key',$_SESSION); 3. Set or update session variables only need to assign values ??to the $_SESSION array without manually saving; 4. Clear specific data with unset($_SESSION['key']), clear all data and set $_SESSION to an empty array.</p>
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<a href="http://www.miracleart.cn/faq/1796826623.html" title="What are recursive functions in PHP?" class="phphistorical_Version2_mids_title">What are recursive functions in PHP?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 29, 2025 am 02:02 AM</span>
<p class="Articlelist_txts_p">Recursive functions refer to self-call functions in PHP. The core elements are 1. Defining the termination conditions (base examples), 2. Decomposing the problem and calling itself recursively (recursive examples). It is suitable for dealing with hierarchical structures, disassembling duplicate subproblems, or improving code readability, such as calculating factorials, traversing directories, etc. However, it is necessary to pay attention to the risks of memory consumption and stack overflow. When writing, the exit conditions should be clarified, the basic examples should be gradually approached, the redundant parameters should be avoided, and small inputs should be tested. For example, when scanning a directory, the function encounters a subdirectory and calls itself recursively until all levels are traversed.</p>
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