php数组转成json格式的方法

本文实例讲述了php数组转成json格式的方法。分享给大家供大家参考。具体实现方法如下：

复制代码 代码如下: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;}

希望本文所述对大家的php程序设计有所帮助。