Solution to PHP Fatal error: Call to undefined function iconv()

PHP Fatal error: Call to undefined function iconv() solution

The iconv() function in PHP is an important function for string conversion, which can be used to convert a string from a Character set converted to another character set. However, in a PHP program, if a "Call to undefined function iconv()" error occurs, it usually means that PHP needs to install the iconv extension or enable related configurations.

The reasons for this error may be as follows:

1. PHP does not have the iconv extension installed

In the PHP program, if iconv is used () function, but the iconv extension is not installed, the "Call to undefined function iconv()" error will occur. The solution to this problem is by installing the iconv extension. The installation method is as follows:

(1) In Windows systems, you can search for "extension=php_iconv.dll" in the php.ini file and remove the semicolon in front of it.

(2) In Ubuntu system, you can install the iconv extension through the following command:

sudo apt-get install php5-iconv

2. PHP does not enable iconv Extension

In a PHP program, if the iconv() function is used but the iconv extension is not enabled in the php.ini file, the "Call to undefined function iconv()" error will also occur. The solution to this problem is to enable the iconv extension in the php.ini file. The enabling method is as follows:

(1) In Windows systems, you can search for "extension=php_iconv.dll" in the php.ini file and remove the semicolon in front of it.

(2) In Ubuntu system, you can enable the iconv extension through the following command:

sudo phpenmod iconv

3. iconv extension is disabled or incompatible

In a PHP program, if the iconv extension is disabled or incompatible, the "Call to undefined function iconv()" error will also occur. The solution to this problem is to check and enable the iconv extension. The specific method is as follows:

(1) Check whether the path of the extension_dir variable in the PHP configuration file php.ini is correct and ensure that the path where the iconv extension is located is correct.

(2) Ensure that the iconv extension is not disabled. Look for the "disable_functions" option in the php.ini file and make sure the iconv extension is not disabled.

(3) Upgrade the PHP version. If the iconv extension is incompatible with the current PHP version, you may consider upgrading the PHP version to resolve compatibility issues.

To sum up, if the "Call to undefined function iconv()" error occurs in a PHP program, you can solve the problem by installing, enabling and checking the iconv extension. At the same time, you also need to pay attention to the compatibility issues between the PHP version and the iconv extension.

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