How php converts an array to a string concatenated with a comma separator

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In php, you can use implode () to convert an array into a string and concatenate each element of the array with a comma separator; the conversion syntax is "implode (',', $arr)".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php converts an array to a string concatenated with a comma separator

In php, you can use implode () to convert an array to a string.

The implode () function converts an one-dimensional array to a string in the following syntax format:

Implode ([$glue,] $array)

$glue is used to set a delimiter (connector), which means to concatenate each element of the array using $glue

$array is the array to be converted.

Example: convert an array to a string concatenated with a comma separator

The $glue parameter of the implode () function is optional and can be omitted. By default, $glue is an empty string.

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