Program code for converting arrays into json strings in PHP_PHP tutorial

Data conversion to js format data is a commonly used method for data transfer. Especially in ajax, it is often used to convert data into json and then back again. Let’s look at an example below. ​

The code is as follows

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代码如下

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function array_to_json($array) {  if (! is_array ( $array )) {   return false;  }    $associative = count ( array_diff ( array_keys ( $array ), array_keys ( array_keys ( $array ) ) ) );  if ($associative) {     $construct = array ();   foreach ( $array as $key => $value ) {       // We first copy each key/value pair into a staging array,    // formatting each key and value properly as we go.       // Format the key:    if (is_numeric ( $key )) {     $key = "key_$key";    }    $key = """ . addslashes ( $key ) . """;       // Format the value:    if (is_array ( $value )) {     $value = array_to_json ( $value );    } else if (! is_numeric ( $value ) || is_string ( $value )) {     $value = """ . addslashes ( $value ) . """;    }       // Add to staging array:    $construct [] = "$key: $value";   }     // Then we collapse the staging array into the JSON form:   $result = "{" . implode ( ",", $construct ) . "}";    } else { // If the array is a vector (not associative):     $construct = array ();   foreach ( $array as $value ) {       // Format the value:    if (is_array ( $value )) {     $value = array_to_json ( $value );    } else if (! is_numeric ( $value ) || is_string ( $value )) {     $value = """ . addslashes ( $value ) . """;    }       // Add to staging array:    $construct [] = $value;   }     // Then we collapse the staging array into the JSON form:   $result = "[" . implode ( ", ", $construct ) . "]";  }    return $result; }

function array_to_json($array) {
if (! is_array ( $array )) {
return false;
}

$associative = count ( array_diff ( array_keys ( $array ), array_keys ( array_keys ( $array ) ) ) );
if ($associative) {

$construct = array ();
foreach ( $array as $key => $value ) {

// We first copy each key/value pair into a staging array,
// formatting each key and value properly as we go.

// Format the key:
if (is_numeric ( $key )) {
$key = "key_$key";
}
$key = """ . addslashes ( $key ) . """;

// Format the value:
if (is_array ( $value )) {
$value = array_to_json ( $value );
} else if (! is_numeric ( $value ) || is_string ( $value )) {
$value = """ . addslashes ( $value ) . """;
}

// Add to staging array:
$construct [] = "$key: $value";
}

// Then we collapse the staging array into the JSON form:
$result = "{" . implode ( ",", $construct ) . "}";

} else { // If the array is a vector (not associative):

代码如下	复制代码
if($_GET['enews']=='ok'){     echo json_encode(array('a'=>'王进'));exit; } ?>

$construct = array ();
foreach ( $array as $value ) {

// Format the value:
if (is_array ( $value )) {
$value = array_to_json ( $value );
} else if (! is_numeric ( $value ) || is_string ( $value )) {
$value = """ . addslashes ( $value ) . """;
}

// Add to staging array:
$construct [] = $value;
}

// Then we collapse the staging array into the JSON form:
$result = "[" . implode ( ", ", $construct ) . "]";
}

return $result;
}

You can try this and then change json_encode to the above function to see if it works properly

The code is as follows	Copy code
if($_GET['enews']=='ok'){ echo json_encode(array('a'=>'Wang Jin'));exit; } ?>> ;

About json_encode in php

json_encode() converts different types of PHP variables into corresponding JSON strings string json_encode(mixed $value [, int

$options = 0])

PHP 5.3.0

JSON_HEX_QUOT: Convert all double quotes (") to u0022.
// Example code:

The code is as follows

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$data = '"';

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$data = '"'; echo json_encode($data); // """ echo json_encode($data, JSON_HEX_QUOT);

echo json_encode($data); // """

echo json_encode($data, JSON_HEX_QUOT);

// "u0022"■JSON_HEX_TAG: Convert all greater-than signs (>) to u003E, replace

All less than signs ( JSON_HEX_AMP: Convert all ampersands (&) to u0026.
JSON_HEX_APOS: Convert all single quotes (’) to u0027.

JSON_FORCE_OBJECT: Forces the output result to be a JSON object when value is a non-associative array. When the receiver requires the data to be an object and the value to be an empty array

Use.

// Example code:

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$data = array(); echo json_encode($data); // [] echo json_encode($data, JSON_FORCE_OBJECT); // {}

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$data = array(); echo json_encode($data); // [] echo json_encode($data, JSON_FORCE_OBJECT); // {}

PHP 5.3.3

JSON_NUMERIC_CHECK: Encodes numeric strings as numbers.

PHP 5.4.0

JSON_BIGINT_AS_STRING: Encodes large integers as their original string value. Available since PHP

5.4.0.

JSON_PRETTY_PRINT: Use whitespace in returned data to format it. Available since PHP 5.4.0.

JSON_UNESCAPED_SLASHES: Don’t escape /. Available since PHP 5.4.0.

JSON_UNESCAPED_UNICODE: Encode multibyte Unicode characters literally (default is to escape as uXXXX).

Available since PHP 5.4.0.

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Data conversion in js format is a commonly used method for data transfer, especially in ajax. Convert the data to json and then convert it back. Let's see an example below. The code is like...